Pressurized hybrid composite pipe structures, produced by filament wound subjected to impact loads, were numerically investigated. A combined 3D-FE Model based on the use of interlaminar and intralaminar damage models is established. Intralaminar damages such as matrix cracking fibre failures are predicted using 3D Hashin criteria, whereas (delamination) was evaluated cohesive zone elements. Th...

Sintering of silver attracts increasing attention in electronic packaging owing to superior bonding quality and high operation temperatures. However, the mechanical properties sintered joints strongly depend on fabrication parameters like sintering temperature, pressure or organic solvents paste. In consequence, characterization this material is a challenging task. present article, unified cons...

Bu çalışma, deneysel ve sayısal olarak kompozit yamalar ile tamir edilen çatlaklı sandviç kirişlerin eğilme darbe davranışını araştırmaktadır. Sandviç kiriş elemanları yüzey tabakaları, cam elyaf takviyeli kompozit, köpük çekirdek, PVC malzeme yapıştırıcı tabakalardır. Üst tabakasına çatlak oluşturularak hasar verilmiştir yama yapıştırılarak edilmiştir. Düşük hızlı davranışı, farklı malzemeleri...

Gao, Zhenyuan MSAA, Purdue University, May 2015. Comprehensively Simulating the Mixed-Mode Progressive Delamination in Composite Laminates. Major Professor: Wenbin Yu. Delamination, or interlaminar debonding, is a commonly observed failure mechanism in composite laminates. It is of great significance to comprehensively simulate the mixed-mode progressive delamination in composite structures bec...

The presented work depicts results of a two-scale approach to the problem of damage and failure prediction on laminated composite structures. Modeling on the micro-level has enabled insight into the underlying physical processes which lead to homogenized properties of the macro-scale material. In this work, micromechanical analysis has been performed by application of the High Fidelity Generali...

In this investigation, the three-parameter Modified Mohr–Coulomb (MMC) fracture model and the determination of the material parameters are briefly described. The formulation of the post-initiation behavior is proposed by defining both the explicit softening law and the incremental damage evolution law. As opposed to the existing attempts to simulate slant fracture with material weakening before...

In this paper, the behavior of high-velocity impact Kevlar fabric and elastomer composites was investigated both experimentally numerically. The experimental tests were performed by a gas gun device hemispherical projectiles at different velocities, ranging from 122 m/s to 152 for 2- 4-layer samples. penetration resistance these during determined using ABAQUS/Explicit. present study's novelty l...

A micro-meso-macro analysis framework based on the multi-scale method was employed to analyse mechanical behaviour of marine GFRP stiffened panels. The study aims establish a procedure for assessing impact material composition and weave ultimate strength assessment an essential step in design process, investigation construction materials has great benefit lightweight composite structures. micro...

A size effect is exhibited by metals in cutting processes at small scales: a nonlinear escalation the energy per unit volume with decrease thickness of uncut chip. To understand this phenomenon, numerical model orthogonal micro-cutting f.c.c. single-crystal copper was developed, and three different depths cut (0.8 μm, 1.4 μm 2.0 μm) were considered. Enhanced models crystal plasticity (EMCP) str...