Abaqus - Science topic

Based on the theory of elastic layered system, this paper establishes a three-dimensional finite element model of cement concrete overlay structure on old cement concrete pavement with the Abaqus program, and analyzes the influence of modulus change of old cement concrete pavement, modulus change of composite foundation and various overlay thicknes...

In rotary and mechanical systems, the fatigue life of bearings is a critical factor to consider if unplanned shutdown is to be prevented. Often, the inner and outer rings of bearings are non-concentric, and this mostly results in axial or angular misalignment. This research employs finite element analysis software, Abaqus CAE and finite element ana...

Thin layers have gained an important place in industrial structures, because of sensitive functions that can perform. Nowadays they are widely used in several forms more particularly coatings. These latter offer many advantages, in manufacturing as one of application fields, cutting tools have a limited lifetime because of wearing and excessively h...

Storage tanks are vital components across industries, especially in the power generation industry, where they are used for oil storage. The internal pressure these tanks are able to withstand greatly affects their longevity and behaviour under service conditions. This paper presents a comprehensive computational study that utilizes Finite Element A...

In order to analyse the deformation mechanism and force distribution of spacer fabrics during compression progress, it is established that the loop structural model of weft-knitted spacer fabric with spacer filaments arranged in X-shape by Rhino software in this paper, and the flat plate compression behaviour of the spacer fabrics was simulated by...

Experimental and numerical investigations were conducted to evaluate the structural performance of deteriorated single-cell precast concrete segmental beam PCSB. The present paper examines how corrosion-induced deterioration affects the structural performance of precast concrete segmental beams with keyed-dry joints under direct concentrated load....

Persimmon is a soft fruit, which is why it is one of the horticultural products most prone to mechanical damage throughout the cold chain. Understanding the impact of this damage on the post‐harvest quality of these fruits is extremely important to reduce losses that occur throughout the supply chain. This study used the finite element method (FEM)...

Compared with the traditional frame structures, the novel composite frame with replaceable steel links can realize the rapid recovery of building occupancy after seismic actions to provide the capacity of reducing structural damage and ensure the reuse of a structure. In this system, plastic deformation and damage mainly concentrated in the steel l...

One of the main challenges in welding structural sections is selecting the optimal welding sequences to minimize residual stresses and distortions. In welded structural sections, such as built-up steel box sections, residual stresses and distortions can lead to failures due to the non-uniform expansion and contraction of the weld and surrounding ma...

Reducing the ratio of box girders' span to their height reduces bending moments and makes them deep members that are controlled by shear behavior. The presence of horizontal curvature generates torsional moments and different deflection between the outer and inner web as a result of twisting. Two experimental specimens with the same dimensions were...

Resumo Pilares são elementos estruturais de grande importância numa edificação e que durante sua vida útil podem ser submetidos a um processo de reforço para aumento da sua capacidade. O reforço com Polímeros Reforçados com Fibras (PRF) é atraente pela facilidade de aplicação e não modificação da seção. O material vem sendo utilizado em pilares pel...

Earthquakes are sudden natural disasters that pose a serious threat to human lives and property. Lifeline systems are essential infrastructure and engineering systems that maintain the economic and social functions of cities or regions, including water supply and drainage systems, oil pipelines, gas systems, etc. In the event of a major earthquake,...

This study investigated both the static and dynamic behavior of silicate materials through a series of experimental and numerical tests. Compression tests were conducted on cubic samples, three-point bending tests on beams, and perforation tests on silicate plates. In the compression tests, stress–strain curves were generated, enabling the calibrat...

This paper deals with the calibration of the polymer material PPC3TF2 using the PRF (Parallel Rheological Framework) material model implemented in the commercial software Abaqus. In order to reduce computational time, the unit cube model was used for the simulations. The coefficients initially calculated in Excel were used as input values to create...

The Chatter vibrations are a critical issue in milling, affecting workpiece quality and potentially damaging machines. This study analyzes the causes of chatter and proposes preventive methods. After reviewing the existing research, the transfer function is analyzed using an orthogonal cutting model, highlighting its evolution concerning system sta...

This investigation employs a three-dimensional coupled thermomechanical finite element analysis to ascertain the characteristics of the initiation of cracks in railway curves. The proposed numerical simulation of wheel–rail contact aims to examine the influence of different curvature radii and slip ratios on the temperature rise, fatigue parameters...

This paper presents a detailed case study of a multistory building near Bombay Motors in Jodhpur that suffered severe fire damage, with temperatures reaching up to 900°C. The fire brigade arrived 30 minutes after the incident. Under the guidance of MBM University, research scholars conducted site investigations to analyze the impact of the fire on...

The main objective of this study is to analyze the impact resistance of aluminum foam composites containing fillers and coatings and to investigate the effect of different thickness ratios of the composites on this capability. We prepared composites using aluminum foam and polyurea and performed impact tests and numerical simulations. A comparison...

A theoretical model for porous viscoelastoplastic (VEP) materials in the dry state is investigated in this research study. The model is based on the principles of conservation of mass and energy using the rheological dynamic theory (RDT). The model provides expressions for the creep coefficient, Poisson’s ratio, modulus of elasticity, damage variab...

A micro-forming model of laser cavitation impact foil was established by Abaqus software. The deformation process and mechanical effect of laser cavitation impact on the formability of copper foil were studied. The results show that the micro-forming process of copper foil consists of four stages, namely, the forming stage under the action of plasm...

This article on the modeling technology of Dez arched concrete dam was done in Abaqus modeling finite element software and the model is located under DBL accelerometers. In the modeling technology, the intensity of the Naghan earthquake has been used, and the results of this operation show that the displacement of the dam crown and the possibility...

This article on the modeling technology of Dez arched concrete dam was done in Abaqus modeling finite element software and the model is located under DBL accelerometers. In the modeling technology, the intensity of the Naghan earthquake has been used, and the results of this operation show that the displacement of the dam crown and the possibility...

It has been commonly assumed that an inerter–stiffness–damping isolator mounts on a rigid foundation, however, there exists a strong interaction among the vibration source, isolator, and the base structure for systems with flexible or nonrigid bases. This paper investigates a system consisting of an isolation object, mounted on flexible base plate...

We present a novel technique to significantly reduce the offline cost associated to non-intrusive nonlinear tensors identification in reduced order models (ROMs) of geometrically nonlinear, finite elements (FE)-discretized structural dynamics problems. The ROM is obtained by Galerkin-projection of the governing equations on a reduction basis (RB) o...

The aim of this work is to develop a neural network for modelling incompressible hyperelastic behaviour with isotropic damage, the so-called Mullins effect. This is obtained through the use of feed-forward neural networks with special attention to the architecture of the network in order to fulfil several physical restrictions such as objectivity,...

This paper presents the analytical model of the beam-beam connection (BBC) and studies the horizontal mechanical performance of the upper beam frame assembled by BBC. The different compressive stress distributions at the contact interfaces of the BBC with intersection angles 2π/4, 2π/5, 2π/6, 2π/7 and 2π/8 are analyzed when it rotates in clockwise...

This study investigates the mechanisms of jittering in telescopic cylinders and proposes effective mitigation strategies. The focus is on the dynamic behavior of hydraulic cylinders under low-speed conditions, particularly the stick-slip phenomenon. Through finite element analysis using Abaqus and tribological tests, the impact of various factors o...

The load capacity and the rotational stiffness of the joints are the main parameters required in the design of steel-framed structures in a persistent design situation. In an accidental situation, high ductility of the joints is required to create and develop catenary action under the column loss scenario. Numerical parametric analyses of double-si...

Large-diameter bored piles are increasingly used in the foundations of bridges, viaducts, and high-rise buildings. This paper proposes a normalized equation to predict the load-displacement curve of bored piles in homogeneous sandy soils from the results of numerical analyses. Geotechnical investigation data and load test results from Araquari Expe...

Rubber components are widely spread in engineering due to their mechanical properties such as high strength, elongation, and dissipation characteristics. Modeling rubber behavior poses challenges because of its complex visco-elastic properties and various nonlinear effects. As high fidelity simulations become increasingly challenging, reduction tec...

The use of composite structures is increasing in the construction industry due to their higher load-bearing capacity, better structural fire performance, and more significant potential to provide optimized structural solutions, effectively creating synergies between structural materials. Steel-concrete composite cellular beams are a good option for...

In this study, a multiscale model is developed through secondary development (UMAT and UEXTERNALDB) in Abaqus with the objective of simulating the thermal deformation process with dynamic recrystallization behavior. The model couples the finite element method (FEM) with the multiphase field model (MPFM), thereby establishing bidirectional coupling...

The zygomatic bone, a fundamental structure in facial anatomy, is exposed to fractures in impact situations, such as traffic accidents or contact sports. The installation of zygomatic implants can also alter the distribution of forces in this region, increasing the risk of fractures. To evaluate this situation, the first step is to develop a comple...

The paper presents the derivation of equations for the calculation of the spring constants k y , k z , and k ϕ and the spring coefficients β y , β z , and β ϕ used in the modeling of a foundation with a rectangular base on elastic soil. All the equations were derived based on information provided in literature, for example, Barkan, Gorbunov-Possado...

Gleeble thermomechanical simulators are widely utilized tools for the investigation of high-temperature deformation behavior in materials. However, temperature gradients that develop within the specimen during Gleeble compression tests have the potential to result in non-uniform deformation, which may subsequently impact the accuracy of the measure...

A growing number of scholars are drawn to using numerical approaches powered by computer simulations as a potential solution to industrial problems. Replicating the compaction process in powder metallurgy with accuracy is one such issue. The Drucker-Prager-Cap model requires parameter calibration as the most used method for simulating powder compac...

This study primarily presents a numerical investigation of the dynamic behavior and vibration control in thin-walled, additively manufactured (AM) beam structures, validated through experimental results. Vibration control in thin-walled structures has gained significant attention recently because vibrations can severely affect structural integrity....

Available studies on concrete structural parts with FRP reinforcement bars concern mostly investigations on bent elements (beams, slabs) [1, 2]. There are also available a few theoretical analyses on columns [3–5]. Though, there is still little experimental data concerning concrete columns with FRP bars [6–8], especially subjected to eccentric load...

Sustainable structures or structural components as one of the frontiers in civil engineering can solve the problem of construction and demolition waste and also enhance the reuse of structural components at the end of their service life or after damage. In terms of sustainable assessment, steel-concrete composite beams with or without novel demount...

Recently developed high-fidelity finite element (FE) models represent a state-of-the-art approach for gaining a deeper understanding of the vibrational behavior of musical instruments. They can also be used as virtual prototypes. However, certain analyses, such as optimization or parameter identification, necessitate numerous model evaluations, res...

This work presents the structural design of a propeller, with its profile established using the OpenProp software for a 5 m long competition catamaran at a speed of 5.5 m/s. The materials selected using the Ashby method were polymer matrix composites, and the chosen manufacturing method was vacuum bagging. The determination of the stacking sequence...

The study presents a framework for analyzing Additive Manufacturing processes within the Peridynamics (PD) software PeriLab. This framewor k employs a mesh‐free, point‐based numerical approach to approximate the continuum PD equations. Implemented within this framework are thermal, thermo‐mechanical, and simple additive models. These models have be...

This paper investigates the low-velocity impact response and damage behavior of glass fiber reinforced polymer (GFRP) hollow ribbed emergency pipes of our design under different impact heights. Drop hammer impact tests with impact velocities of 8.41 m/s, 8.97 m/s, and 9.50 m/s were conducted using an impact platform. A progressive damage model for...

Carbon fiber reinforced polymer (CFRP) laminates are widely used to strengthen and retrofit deteriorated concrete structures, yet their long-term performance and durability under varied environmental conditions remain critical areas of investigation. This study comprehensively examined the behavior of small concrete beams externally bonded with CFR...

In this work, we numerically and experimentally investigate the ballistic performance of thermoplastic polyurethane (TPU)/steel configurations against spherical projectiles. We chose TPU materials with high and low hardness values to form the impact-sustaining layer to investigate the ballistic performance of protective configurations. Experiments...

The friction stir welding (FSW) process was developed by the Welding Institute (TWI) in 1991. The idea started from the need to use materials with high strength and low density in the aerospace and automotive industries to increase their performance. The FSW process enables the welding of dissimilar metals such as Al/Mg, Al/Cu, Cu/Mg, etc., without...

This paper integrates numerical and experimental approaches to predict the mechanical properties of a woven composite with carbon fiber-based fabrics. Initially, a multiscale modeling approach based on the finite element method ascertained the micro-scale properties of the composite tows, taking into account the effect of voids present in the epoxy...

Ammonia is a toxic gas and can cause tragic consequences for humans. The damage level depends on concentration and duration of exposure. The security length associated with the risk of a tank leak at the acute exposure level of 30 ppm (AEGL-1) has been computed. Two tools have been combined: the CTOA criterion and the ALOHA software. The CTOA, a me...

A benchmark study on high-cycle fatigue modelling using a cohesive zone model presented for a bonded composite double-cantilever beam (DCB) joint. A user-developed subroutine, USDFLD, was applied to make the field variable represented by a characterized damage parameter for controlling the degradation and failure behaviour of cohesive elements. Acc...

Over the past few decades, flexible pavements across the globe have seen a significant reduction in their service life due to climate changes. The flexible pavements with unsaturated subgrades undergo volumetric changes during the drying and wetting phases, affecting their long-term deformation behavior. These phases cause significant variations in...

In conventional double-hulled submarines, the connecting structures that facilitate the linkage between the two hulls are crucial for load transmission. This paper aims to elucidate the effect of these connecting structures on resistance to shock waves generated by underwater explosions. Firstly, a self-developed numerical solver is built for the o...

Existing tensioning cable prestress ensures bridge safety. This work presents the micro-hole release technique, which accurately measures the effective prestress of strands in existing prestressed concrete bridges. The strand drilling model was produced in Solidworks and Abaqus. The effect of drilling depth, diameter, deflection angle, and hole edg...

The error in modulus backcalculation is a crucial component in validating the rationality and reliability of results for engineering applications. The objective of this study is to identify the theoretical limitations associated with backcalculated modulus errors under typical parameter uncertainties and to determine the primary factors contributin...

Steel shear wall (SSW) is an efficient system used to construct and improve many structures over the past decades. The main weakness of the traditional flat plate SSW is the premature buckling of the plate, for which the corrugated steel shear wall (CSSW) is a suitable alternative. However, the reduced resistance of CSSW compared to flat SSWs is a...

GFRP (glass fiber reinforced polymers) rebars can be used in RC (reinforced concrete) structures as an alternative to conventional steel rebars. Their application offers advantages, especially in chemically aggressive environments, as they can reduce the C (concrete cover) thickness required and also optimize the cross-sectional dimensions of these...

Lateral confinement and high temperature affect the load-carrying capacity of a concrete member significantly. In a fire condition, a concrete member exhibits not only mechanical deformation but also thermal deformation. Therefore, accurately modeling the fire behavior of confined structural concrete is challenging. In this paper, a new three-dimen...

This study investigates the spheroidization of titanium Ti-6Al-4V powder particles using numerical models developed in Abaqus and OpenFOAM. Spherical particles are crucial in powder-based additive manufacturing due to their superior flowability, packing density, and mechanical properties, enhancing printing precision and the quality of final produc...

To evaluate the energy absorption ability of composite beams with corrugated web under impact, the drop tests were conducted to demonstrate the fracture modes and obtain the load and energy history curves. Based on the drop tests, a finite element (FE) model was proposed with a weak link designed to trigger crushing, developed using Abaqus/Explicit...

The development of alternative environmentally friendly and sustainable materials in the construction industry has become a fundamental area of research. The current cementitious materials used in existing retrofitting techniques for masonry structures are unsustainable from an environmental point of view. The geopolymer, as a suitable alternative...

Clay and sand were often treated as two different materials that required respective constitutive models to capture the state-dependent nonassociated responses. This study developed a three-dimensional isotropic plasticity model for clay with different over-consolidation ratios (OCRs) and sand with particle breakage, through adopting shift stress-e...

This paper introduces a novel hybrid vision-based modal analysis technique for tires, leveraging the capabilities of a low-cost smartphone in comparison with the high-cost digital image correlation (DIC) method. This approach significantly enhances accessibility and affordability for modal testing while delivering results that align closely with tr...

The reliability and longevity of the guiding shoe are crucial for the proper functioning of coal mining machines. The heavy wear of the sliding surface under thermal stress coupling is the primary factor influencing the service life of the guiding shoe. To reveal the heat flow distribution patterns and the thermo-stress coupling mechanisms of the g...

With the intensification of global climate change, extreme rainfall events are occurring more frequently. Continuous rainfall causes the debris flow gully to collect a large amount of rainwater. Under the continuous increase in the water level, the water flow has enough power to carry plenty of loose solids, thus causing debris flow disasters. The...

To satisfy lightweight design requirements, aerospace ducts frequently employ ultra-thin-walled tubes with a diameter-to-thickness ratio (D/t) exceeding 100.However, ultra-thin-walled tubes present significant forming challenges, and the mandrel plays a critical role in their bending. Therefore, investigating the effect of mandrel structure on the...

The World Stress Map is a global compilation of data on crustal stress designed to assess worldwide stress patterns and identify stress sources. However, its effectiveness is limited due to inadequate coverage in Africa. This research project aimed to model crustal stress patterns and understand the correlations with contemporary seismicity. To thi...

As an important component of mechanical transmission systems, internal splines are widely used in aerospace, industrial equipment, and other fields. However, internal splines are prone to deformation and shrinkage after heat treatment. At present, most internal splines with a pitch circle diameter greater than φ60 mm can be processed and shaped by...