Chyanbin Hwu
National Cheng Kung University
PhysicsMathematical analysisFormalism (philosophy of mathematics)Finite element methodComposite laminatesComposite materialBoundary value problemIsotropyMaterials scienceGeometryAnisotropic elasticityMaterial propertiesMathematicsStress intensity factorMechanicsBoundary (topology)Boundary element methodStructural engineeringClassical mechanicsAnisotropy
138Publications
25H-index
1,770Citations
Publications 139
#1Chia-Wen Hsu (NCKU: National Cheng Kung University)
#2Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
Abstract null null Recently, we corrected the Green's functions for holes/cracks in composite laminates under coupled stretching-bending deformation. Through these corrected Green's functions, the fundamental solutions required for the special boundary element of holes/cracks in composite laminates are derived. By the use of dual coordinates, the derived fundamental solutions can be further applied to the cases of inclined holes and cracks. Moreover, a formula evaluating the stress intensity fac...
#1Van Thuong Nguyen (NCKU: National Cheng Kung University)H-Index: 6
#2Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
Abstract null null In this study the time-stepping method, which can convert the problem of anisotropic viscoelasticity into two sets of elastic-like system, is employed for both analytical solutions and boundary element method (BEM) to solve the two-dimensional problems of holes and cracks in anisotropic viscoelastic solids. Based upon this method and the available solutions for the corresponding elastic problems, some analytical solutions for the two-dimensional problems of holes and cracks in...
#1Chia Wen Hsu (NCKU: National Cheng Kung University)H-Index: 1
#2Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
Abstract For unsymmetric composite laminates under in-plane forces, transverse loads, out-of-plane bending and/or twisting moments, the stretching and bending deformations would be both induced and coupled together. Through Stroh-like formalism for coupled stretching-bending analysis, several analytical solutions for holes/cracks in laminates were presented in the literature. However, due to the improper use of traction-free hole boundary conditions, most of the existing solutions provide wrong ...
#1Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
This book is concerned with the computer program using matlab language to code the analytical solutions and boundary element methods formulated by Stroh formalism. To achieve this goal, the program structures detailing the computational procedure as well as the nomenclature of control parameters, global variables, input, and output are described in Sect. 3.1. The entire computer program named as AEPH (Anisotropic Elastic Plates—Hwu) is performed by the main program together with several function...
#1Van Thuong Nguyen (NCKU: National Cheng Kung University)H-Index: 6
#2Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
Abstract By the time-stepping method proposed in this paper, the basic equations for linear anisotropic viscoelasticity with small strains and quasi-static condition can be separated into two parts. One is an elastic system of the initial state, and the other is an elastic-like system related to the follow-up time step. Based upon this result, all the viscoelastic problems can be handled by two sets of elastic systems. Boundary element method and its associated constraint relations are then form...
#1Van Thuong Nguyen (NCKU: National Cheng Kung University)H-Index: 6
#2Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
Abstract In this paper both of the elastic-viscoelastic correspondence principle and time stepping method, which can convert viscoelasticity to elasticity, are employed to the boundary element method (BEM) to solve the contact problems between multiple rigid punches and anisotropic viscoelastic foundation. The one based upon the correspondence principle has the restriction on time-invariant boundaries, and hence can only be applied to the cases of complete indentation whose contact region as wel...
#1Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
#2Mohit Aggarwal (NCKU: National Cheng Kung University)H-Index: 1
Last. Junru Lee (NCKU: National Cheng Kung University)H-Index: 1
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A new approach of multi-scale simulation via coupling of boundary element and finite element is proposed to predict fracture toughness and crack propagation of a single layer graphene sheet. In this simulation a molecular dynamics-based nonlinear beam element is developed for the atomistic model near the crack tip, whereas a special two-dimensional boundary element is employed for the continuum model in the remaining field of the cracked specimen. The material and section properties required in ...
#1Van Thuong Nguyen (NCKU: National Cheng Kung University)H-Index: 6
#2Chyanbin HwuH-Index: 25
Abstract A two-dimensional anisotropic elastic or viscoelastic solid indented by multiple rigid punches is considered. By taking the rigid body translation and rotation of each punch as the additional variables to the usual contact boundary element method (BEM), we propose a brand-new BEM in which the additional equations come from the force/moment equilibrium of each punch. In this newly developed BEM, the selected fundamental solutions are valid for the general anisotropic elastic/viscoelastic...
#1Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
#2Han Bin Ko (NCKU: National Cheng Kung University)H-Index: 1
Last. Chia Wen Hsu (NCKU: National Cheng Kung University)H-Index: 1
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Abstract To improve the numerical evaluation of weakly singular integrals appearing in the boundary element method, a logarithmic Gaussian quadrature formula is usually suggested in the literature. In this formula the singular function is expressed in terms of the distance between source point and field point, which is a real variable. When an anisotropic elastic solid is considered, most of the existing fundamental solutions are written in terms of complex variables. When the problems with hole...
#1Chia Wen Hsu (NCKU: National Cheng Kung University)H-Index: 1
#2Chyanbin Hwu (NCKU: National Cheng Kung University)H-Index: 25
It is known that the stretching and bending deformations will be coupled together for the unsymmetric composite laminates under in-plane force and/or out-of-plane bending moment. Although Green's f...