Manik Bansal

Manik Bansal
University of Pittsburgh | Pitt · Department of Ophthalmology

Doctor of Philosophy

About

9
Publications
5,077
Reads
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75
Citations
Citations since 2016
6 Research Items
75 Citations
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
Introduction
My expertise is in development of various novel stochastic multiscale algorithms for composite materials with complex microstructure including adaptive mesh algorithms, XFEM based numerical techniques (MsXFEM, multi-split XFEM, multi-split MsXFEM), and coupled XFEM-Gradient Enhanced Damage model. Currently, my research focus is to develop and optimize both numerical and experimentation methods for understanding the role of collagen fiber architecture on the biomechanics of soft tissues.
Additional affiliations
February 2020 - present
University of Pittsburgh
Position
  • PostDoc Position
November 2014 - September 2019
Indian Institute of Technology Roorkee
Position
  • Researcher
Description
  • MHRD has provided the financial support for the PhD thesis entitled as "Computationally efficient multi-split XFEM for the analysis of heterogeneous materials"
August 2013 - October 2014
Lovely Professional University
Position
  • Professor (Assistant)
Education
December 2014 - July 2019
Indian Institute of Technology Roorkee
Field of study
  • Computational Mechanics
July 2011 - June 2013
VIT University
Field of study
  • CAD/CAM
July 2005 - June 2009
Savitribai Phule Pune University
Field of study
  • Mechanical Engineering

Publications

Publications (9)
Article
A coupling of extended finite element method (XFEM) and strain gradient enhanced damage method is proposed to model damage initiation and growth in the materials with reinforcement particles. The proposed model inherits the advantages of both methods i.e., simple definition of reinforcement particles from XFEM and numerical stability during damage...
Article
In this article, a computationally efficient multi-split MsXFEM is proposed to evaluate the elastic properties of heterogeneous materials. The multi-split MsXFEM is the combination of multi-split XFEM with multiscale finite element methods (MsFEM). The multi-split XFEM is capable to model multiple discontinuities in a single element which leads to...
Article
We propose a parallel and computationally efficient multi-split XFEM approach for 3-D analysis of heterogeneous materials. In this approach, multiple discontinuities (pores and reinforcement particles) may intersect any given element (we call those elements multi-split elements). These discontinuities are modeled by imposing additional degrees of f...
Article
In the present study, a two-scale stochastic framework has been proposed for predicting the failure strength probability of heterogeneous materials. The analysis at both scales (meso and macro) is performed under plane stress condition. The meso-scale analysis is performed by XFEM whereas the macro-scale analysis is performed by FEM. The heterogene...
Article
In this work, a strength pair model has been proposed for the numerical prediction of flexural strength probability of NBG-18 nuclear grade graphite. The input to the proposed model is a random strength pair of tensile and compressive strengths whose value is based on its probability of occurrence in the experimental data. A finite element–based de...
Article
A stochastic XFEM model based on microstructural observations has been developed to evaluate the tensile strength of NBG-18 nuclear graphite. The nuclear graphite consists of pitch matrix, filler particles, pores and micro-cracks. The numerical simulations are performed at two length scales due to large difference in average size of filler particle...
Research
Full-text available
Although stress intensity parameter is independent of plane stress and plane strain conditions, the energy release rate of the crack varies in these conditions. The energy release rate is higher in plane stress condition than in plane strain condition. The paper attempts to capture the magnitude of the effect of plane stress and plane strain condit...
Conference Paper
Full-text available
In the present investigation safe internal pressure is determined in delaminated composite cylindrical shells with the consideration of absence of delamination growth. Critical strain energy release rate (CSERR) criterion is used to evaluate the allowable intensity of stresses in the structure near the delamination front. Virtual crack closer techn...
Chapter
Full-text available
Although stress intensity parameter is independent of plane stress and plane strain conditions, the energy release rate varies in these condition. It is higher in plane stress than plane strain condition. The paper attempts to capture the magnitude of the effect of these conditions over energy release rate of the crack in SSY (LEFM) and EPFM regime...

Questions

Questions (6)
Question
Dear Readers,
The "*STATIC, Stabilize, Factor=2e-4" is commonly used in Abaqus to initiate adaptive automatic damping algorithm. I am looking to implement the same using Calculix but "Stabilize" is not recogonized by "Calculix". Kindly share your expertise to resolve the issue.
Thanks,
Best Regards,
Manik
Question
From couple of weeks, the most popular imechanica.org discussion forum website is not responding. Please share your views ??
Question
It has been documented (Grigoriev et al. 2010) that bending strength of ZrB2–SiC ceramics increases with increase in volume fraction (0-30%) of Sic particulates. Although both matrix and filler behave as brittle. Considering brittle behaviour, the composite strength should not exceed the matrix strength as matrix will fail first even if strength of particulates are more than matrix specially in tensile loading. Please correct me and comment
Thanks in advance
Regards,
Manik 
Question
Dear all, 
Most of the pressure dependent plasticity model like Drucker-Prager experiences volumetric plastic deformation. It is really doubtful to understand whether plastic incompressibility condition is valid or not ?? During there plane stress implementation  of these pressure dependent plasticity models. In case, condition is not valid !! Then how to evaluate the plastic component of strain in z-z direction
Regards,
Thanks in advance 
Question
Generally in the literature for the sample preparation of graphite it is mentioned to use 0.5 micron SiC powder in water based suspension system for polishing. But in case SiC powder is not available can we use Cerium oxide or Alumina powder ? or any other ???
Thanks in advance
Question
In order to evaluate the reduced basis for the initiation of the simulation process we have to pre-compute the displacement vector for all the time steps. If through POD we have to escape the process of evaluating displacement vector for the large DOF system then what is the point of pre-evaluation of the displacement vectors ??? Please correct me if wrong 
Thanks in advance

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Cited By

Projects

Projects (3)
Project
To develop a computationally efficient stochastic multiscale framework for the evaluation of bulk properties of the heterogeneous composite
Archived project
The main objective of the work is to optimise the ply sequence in the laminated composite shells taking into account the delamination and other failure parameters
Archived project
Development of models for prediction of strength probability for graphite in Tension/Compression/Bending