Walter D. Pilkey’s research while affiliated with University of Virginia and other places

... In these cases, dry friction forces must be absent near the balance point. In spite of weighty arguments about shock and vibration protection systems [2][3][4][5][6][7][8], little attention has been paid to dry friction vibration insulation. ...

Reference:

System Designed for Shock and Vibration Protection Using Dry Friction

... The calculation of SCF is essential to calculate the maximum stress around the hole. According to Peterson [28], the SCF (K T ) is specified as the ratio of extreme stress (σ max ) in the hole zone under the actual loads to the nominal stress (σ nom ) in the section, as shown in Equations (22)-(25) For the simple geometries, σ max is assessed using numerical methods or analytical procedures. Experimental methods, such as photoelasticity or digital image correlation, can also be used to estimate it. ...

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Investigations for Design Estimation of an Anisotropic Polymer Matrix Composite Plate with a Central Circular Hole under Uniaxial Tension

... The fiber direction was solved using the linear-elastic behavior from the fiber instead of the homogenized composite since it is governed by inextensible fibers. The constitutive equation for the stress is given by Equation (4) [42]. ...

Reference:

Effect of Resin Bleed Out on Compaction Behavior of the Fiber Tow Gap Region during Automated Fiber Placement Manufacturing

... where Λ is ratio of the inner radius to the outer radius [10]. dimensional shear correction term φ which is equivalent to shear correction factor κ is usually used ic system, disks can be modeled either as rigid bodies or flexible bodies. ...

Reference:

Reduction of Rotor-Bearing-Support Finite Element Model through Substructuring

... The implant material is the original material that is cultured in vitro from cells obtained from a patient and subsequently implanted. And a biomaterial that serves as a replacement for part of the human tissue in the support system [2]. ...

Reference:

Investigation of premature failure of hip joint replacement

... Residual stresses are known to be stresses in a solid state of an specimen, at a uniform temperature, in the absence of any external loads (forces, couples or accelerations). This causes the formation of a system of forces in equilibrium, both locally and globally, which is generally difficult to evaluate [1,2]. ...

Reference:

Strain Gauge Rosette for Triaxial Strain Measurement

... Appendix B. Deflection and moment capacity calculation of the hybrid timber concrete panels in Table 3 B.1. Deformation at SLS Deformation of a beam under four point bending as shown in Fig. A1 is calculated by [41]: ...

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Experimental investigation of a timber-concrete floor panel system with a hybrid glass fibre reinforced polymer-timber corrugated core

... Доказательство данного утверждения опускается. Его можно найти, например, в [7]. Движение объекта относительно основания при управлении (5.10) происходит следующим образом. ...

Reference:

Limiting performance analysis of shock isolation for transient external disturbances

... Grip strength on the handgrip affects hand, wrist and elbow kinematics and in turn the peak forearm force. In a simulation with a weak grip (10 N grip force), the upper extremity maintains contact with the airbag during deployment and the elbow is forced into full extension, which results in a high compressive load (4,760 N) to the forearm [ 173 ]. In a simulation of a strong grip (418 N grip force), the elbow slips inboard of the deploying airbag prior to full elbow extension and thus does not undergo direct airbag contact or prolonged loading. ...

Reference:

Role of Muscles in Accidental Injury

... Currently, GEBOD has data sets of 50 percentile sitting and standing Hybrid II and Hybrid III dummies. It also has a sitting Hybrid III dummy with enhanced lower extremity model (Pellettiere, et al., 1998). ...

Reference:

Development and Validation of ATB Model for THOR-NT Dummy