International Journal of Mechanics and Materials in Design
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Finite-volume enabled transformation field analysis of periodic materials
International Journal of Mechanics and Materials in Design - Tập 9 - Trang 153-179 - 2013
The transformation field analysis (TFA) proposed by Dvorak et al. in a sequence of papers in the 1990s is an important conceptual cornerstone of the elastic–plastic analysis of heterogeneous materials. However, the need for highly discretized unit cells required to attain converged homogenized response using finite-element based calculation of the plastic influence matrices employed in TFA simulat...... hiện toàn bộ
Nonlinear multibody dynamics and finite element modeling of occupant response: part II—frontal and lateral vehicle collisions
International Journal of Mechanics and Materials in Design - - 2019
A dynamic XFEM formulation for crack identification
International Journal of Mechanics and Materials in Design - Tập 12 - Trang 427-448 - 2015
Nelder–Mead (NM) and Quasi-Newton (QN) optimization methods are used for the numerical solution of crack identification problems in elastodynamics. Fracture is modeled by the eXtended Finite Element Method. The Newmark-β method with Rayleigh damping is employed for the time integration. The effects of various dynamical test loads on the crack identification are investigated. For a time-harmonic ex...... hiện toàn bộ
Layerwise modeling of progressive damage in fiber-reinforced composite laminates
International Journal of Mechanics and Materials in Design - Tập 2 - Trang 165-182 - 2006
This paper investigates the effects of discrete layer transverse shear strain and discrete layer transverse normal strain on the predicted progressive damage response and global failure of fiber-reinforced composite laminates. These effects are isolated using a hierarchical, displacement-based 2-D finite element model that includes the first-order shear deformation model (FSD), type-I layerwise mo...... hiện toàn bộ
Optimization for friction welding parameters with multiple performance characteristics
International Journal of Mechanics and Materials in Design - Tập 3 - Trang 309-318 - 2007
Friction Welding is a variation of pressure welding method. Though some experience has already been accumulated in the industrial application of friction welding, achieving the optimal processing parameters is still a difficult task. This work is putting a step forward to achieve the best possible design. This paper presents an investigation on the optimization and the effect of welding parameters...... hiện toàn bộ
A Zener–Stroh crack at the interface of a thin film bonded to a substrate
International Journal of Mechanics and Materials in Design - Tập 1 - Trang 241-254 - 2005
A Zener–Stroh crack can nucleate at the interface of a multi-layered structure when a dislocation pileup is stopped by the interface which works as an obstacle. During the entire fracture procedure of a crack, Zener–Stroh crack mechanism controls the initial stage, or the first phase of crack initiation and propagation. In our current research, stress investigation on a Zener–Stroh crack initiated...... hiện toàn bộ
A 2D topology optimisation algorithm in NURBS framework with geometric constraints
International Journal of Mechanics and Materials in Design - Tập 14 - Trang 669-696 - 2017
In this paper, the solid isotropic material with penalisation (SIMP) method for topology optimisation of 2D problems is reformulated in the non-uniform rational BSpline (NURBS) framework. This choice implies several advantages, such as the definition of an implicit filter zone and the possibility for the designer to get a geometric entity at the end of the optimisation process. Therefore, importan...... hiện toàn bộ
Isogeometric level set topology optimization for elastoplastic plane stress problems
International Journal of Mechanics and Materials in Design - Tập 17 Số 4 - Trang 947-967 - 2021
This article aims to utilize IsoGeometric analysis (IGA) and Level set method for topology optimization of elastoplastic plane stress problems. The IGA is employed to model geometry of the problem and calculate unknown displacements by satisfying equilibrium for materially-nonlinear problems. The von Mises elastoplastic material behavior model with and without isotropic strain hardening is utilize...... hiện toàn bộ
Tính năng bảo vệ nhiệt của các composite polymer với nano-titanium dioxide Dịch bởi AI
International Journal of Mechanics and Materials in Design - Tập 15 - Trang 585-599 - 2018
Công trình hiện tại nghiên cứu về các tính chất ablative và nhiệt của một loại nhựa epoxy đã được sửa đổi bằng các hạt nano titanium dioxide có kích thước khác nhau. Các mẫu đã chuẩn bị được đưa ra nhiệt độ trên 1900 °C và được kiểm tra về tính năng bảo vệ nhiệt và tính năng ablative. Ảnh hưởng của các thành phần composite epoxy đến tính năng bảo vệ nhiệt và tính năng ablative: nhiệt độ tối đa ở m...... hiện toàn bộ
Post-buckling optimization of two-dimensional functionally graded porous beams
International Journal of Mechanics and Materials in Design - Tập 15 - Trang 801-815 - 2019
In the present study, an attempt is made to present the governing equations on the post-buckling of two-dimensional (2D) FGP beams and propose appropriate optimization procedure to achieve optimal post-buckling behavior and mass. To this end, Timoshenko beam theory, Von-Karman nonlinear relations, virtual work principle, and generalized differential quadrature method are considered to derive and s...... hiện toàn bộ
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