strain rate potentialsheet metal formingblank designIn this paper, potentials that analytically describe the plastic behavior of orthotropic metals are reviewed. These potentials, yield functions or strain rate potentials were expressed in six-dimensional stress or strain rate spaces, respectively. Some ...
Yield strength is the maximum stress a material will tolerate before plastic deformation begins. Learn more about it here.
Strain You will also be able to find the amount of stretch or elongation the specimen undergoes during tensile testing This can be expressed as an absolute measurement in the change in length or as a relative measurement called "strain". Strain itself can be expressed in two different ways, ...
letters estimating the yield strength of thin metal films through elastic-plastic buckling-induced debonding S Goyal,K Srinivasan,G Subbarayan,... 被引量: 0发表: 0年 The effect of film thickness on the failure strain of polymer-supported metal films We perform uniaxial tensile tests on ...
Fig.1 Stress – strain diagram 2. Difference in Yield Strength 2.1 Difference in yield strength Table 1 shows the different yield strengths obtained from AISI 4140 alloy steel but different heat treaters. 2.2 Effect of composition on the YS difference ...
The proposed yield function is independent of hydrostatic pressure. So, except for such cases, strain rates can be calculated for any loading condition. Applications of this new criterion for aluminum alloy sheets are presented. The uniaxial plastic properties determined for 2008-T4 and 2024-T3 s...
This is the most widely used strength measure of metals, and is found from the stress-strain curve as shown in the figure to the right. A plastic strain of 0.2% is usually used to define the offset yield stress, although other values may be used depending on the material and the applica...
Barlat'91yield criteriaaccount for six stress components is adopted to describe the material constitutive behaviors of aluminum alloys. 采用Barlat' 91材料屈服准则准确描述铝合金板料各向异性,通过与其它屈服准则的比较发现,Barlat 91屈服准则能反映在单轴拉伸和等双轴拉伸条件附近屈服面的小曲率半径。
A stress-strain constitutive equation of non-linear combined hardening rule was proposed based on non-linear kinematic hardening theory of Lemaitre and Chaboche,isotropic hardening and Mises yielding criterion. 基于Lemaitre and Chaboche非线性随动强化理论、等向强化和Mises屈服准则,建立了复杂加载模式下非线...
of loading-unloading process.The location of elastic-plastic transition is more accurately identified based on the acquired Lagrangian sound velocity against particle velocity,relative to based on the Lagrangian sound velocity against engineering strain.The dynamic yield strength of LY12-aluminum treated by...