Special Issue "Advances in Computational Mechanics and Optimization
To celebrate the 95th birthday of Professor Karl Stark Pister"


Submission Deadline: 15 June 2021 (closed)
Guest Editors
Prof. Loc Vu-Quoc, University of Illinois at Urbana-Champaign, USA
Prof. Shaofan Li, University of California-Berkeley, USA

Summary

To celebrate the 95th birthday of Professor Karl Stark Pister, we invite some of Professor Pister’s former students, friends and colleagues to contribute a paper to a special issue in the Computer Modeling in Engineering & Sciences (CMES) (The authors of the special issue are invited only).

 

To reflect the contributions of Prof. Pister’s academic career, the theme of the special issue is the advances in Computational Mechanics and Optimization.

 

The deadline for the submission is set as 2021 Mar 31, and it will accommodate some requests to extend the deadline in this special time. 


Published Papers






  • The Lu-Pister Multiplicative Decomposition Applied to Thermoelastic Geometrically-Exact Rods
  • Abstract This paper addresses the application of the continuum mechanics-based multiplicative decomposition for thermohyperelastic materials by Lu and Pister to Reissner’s structural mechanics-based, geometrically exact theory for finite strain plane deformations of beams, which represents a geometrically consistent non-linear extension of the linear shear-deformable Timoshenko beam theory. First, the Lu-Pister multiplicative decomposition of the displacement gradient tensor is reviewed in a three-dimensional setting, and the importance of its main consequence is emphasized, i.e., the fact that isothermal experiments conducted over a range of constant reference temperatures are sufficient to identify constitutive material parameters in the stress-strain relations. We address various isothermal… More
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  • Mass-Stiffness Templates for Cubic Structural Elements
  • Abstract This paper considers Lagrangian finite elements for structural dynamics constructed with cubic displacement shape functions. The method of templates is used to investigate the construction of accurate mass-stiffness pairs. This method introduces free parameters that can be adjusted to customize elements according to accuracy and rank-sufficiency criteria. One- and two-dimensional Lagrangian cubic elements with only translational degrees of freedom (DOF) carry two additional nodes on each side, herein called side nodes or SN. Although usually placed at the third-points, the SN location may be adjusted within geometric limits. The adjustment effect is studied in detail using symbolic computations for a… More
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  • Virtual Element Formulation for Finite Strain Elastodynamics
  • Abstract The virtual element method (VEM) can be seen as an extension of the classical finite element method (FEM) based on Galerkin projection. It allows meshes with highly irregular shaped elements, including concave shapes. So far the virtual element method has been applied to various engineering problems such as elasto-plasticity, multiphysics, damage and fracture mechanics. This work focuses on the extension of the virtual element method to efficient modeling of nonlinear elasto-dynamics undergoing large deformations. Within this framework, we employ low-order ansatz functions in two and three dimensions for elements that can have arbitrary polygonal shape. The formulations considered in this… More
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