The paper presents the experimental results of mechanical behavior Ti-5Al-2.5Sn alloy at high strain rates and elevated temperature. Flat smooth notched specimens with notch radii 10 mm, 5 2.5 mm were used. studies carried out using high-velocity servo hydraulic test machine Instron VHS 40/50-20. samples heated flat ceramic infrared emitters on average between 60 s 160 s. temperature control in...

The continuum mechanic simulation of micro-structural damage process is important in the study of ductile fracture mechanics. In this paper, the continuum damage mechanics model formulation proposed by Lematire has been validated against ductile damage evolution experimentally measured in A533B-C1 steel under stress triaxiality conditions. First, a &#10procedure to identify the model parameters...

The continuum mechanic simulation of micro-structural damage process is important in the study of ductile fracture mechanics. In this paper, the continuum damage mechanics model formulation proposed by Lematire has been validated against ductile damage evolution experimentally measured in A533B-C1 steel under stress triaxiality conditions. First, a procedure to identify the model parameters f...

The finite element simulation of forming processes or vehicle crash scenarios involves multiaxial loading conditions in general. Thereby, damage and failure ductile steel sheets is triggered by void growth under hydrostatic tensile elongation within a narrow band shear dominated loading. These different mechanisms are considered stress state dependent continuum model. initiation represented cri...

In order to investigate the creep damage and crack growth of TC11, we established finite element model based on ductility exhaustion constitutive model. This paper uses uniaxial test TC11 at 500℃ as a reference studies effect initial dimensions CT specimen surface specimen. The length has significant material. larger length, higher rate, tip equivalent stress triaxiality. greater influence for ...

This paper presents experimental and numerical results for fully-clamped square steel plates to elucidate how the deformation failure are affected by presence of pre-formed holes, holes’ geometry, under confined blast loading. The geometry holes will be shown play a crucial role in plate. Numerical simulations successfully predict inelastic crack propagation observed experiments; and, it that v...

A set of constitutive equations for large rate-dependent elastic–plastic-damage materials at elevated temperatures is presented to be able to analyze adiabatic high strain rate deformation processes for a wide range of stress triaxialities. The model is based on the concepts of continuum damage mechanics. Since the material macroscopic thermo-mechanical response under large strain and high stra...