The propensity of the transition of fracture type in either brittle or ductile cracked solid under mixed-mode I and III loading conditions is investigated. A fracture criterion based on the competition of the maximum normal stress and maximum shear stress is utilized. The prediction of the fracture type is determined by comparing smax=rmax at a critical distance from the crack tip to the materi...

Considering the case of fabricating a UHSFRC (ultra-high strength fiber-reinforced concrete) beam with the method of one end placing and self-flowing to the other end, it was intended to simulate the variation of the fiber orientation distribution according to the flow distance and the variation of the resultant tensile behaviors. Then the validity of the simulation approach was shown by compar...

This paper presents numerical analysis result of forming characteristics of Ta explosively formed penetrator (EFP) according to various material models and their values. Dynamic material properties of Ta were measured with static tensile testing machine and Hopkinson pressure bar tests. We used AUTODYN hydrodynamic code to simulate these phenomena. We used three material models, such as Von-Mis...

Additive manufacturing (AM) has become a viable option for producing structural parts with high degree of geometrical complexity. Despite such trend, accurate material properties, under diversified testing conditions, are scarce or practically non-existent the most recent additively manufactured (AMed) materials. Such data gap may compromise component performance design, through numerical simul...

An experiment on the static and dynamic tensile mechanical properties of polyvinyl chloride (PVC) elastomers is conducted using an Instron-5943 universal testing machine improved Split Hopkinson Tensile Bar to study PVC elastomer materials. The stress-strain curves materials with three types Shore hardness (57A, 52A, 47A) under strain rates 0.1 s−1 400 ∼ 1800 are obtained. Results show that beh...

A specific design approach is formulated to notched components of additively manufactured AISI 316L against constant/variable amplitude multiaxial fatigue loading. The accuracy the proposed checked experimental results generated by testing, under biaxial loading, plain/notched cylindrical specimens 3D-printed 316L. Specific trials were run investigate also effect out-of-phase angles equal 90° a...

Finite Fracture Mechanics and Cohesive Crack Model can effectively predict the strength of plain, cracked or notched structural components, overcoming classical drawbacks Linear Elastic Mechanics. Aim present work is to investigate size effects by expressing each model as a unified system two equations, describing stress requirement energy balance, respectively. Brittle crack onset in different...