该方法基于塑性增量理论，应用塑性成形过程的体积不变假设和弯曲过程的平截面假设。
The proposed method is based on the incremental theory, volume invariance and planar cross_section are assumed.
采用塑性增量理论，建立了波纹管液压胀形的应力、应变数值计算方法，解决了波纹管液压胀形工艺的理论计算问题。
By plasticity increment theory, the stress strain numerical calculate methods of bellows bulge forming, solvers theory calculating problems of bellows bulge forming technology are put forward.
通过增量理论弹塑性有限元计算，对比分析了带和不带加载孔ct试样J积分之间的差异。
The differences of J-integral between CT specimens with and without loading holes have been compared and analyzed by means of incremental theory elastic - plastic finite element calculations.
它与夸脱理论相结合，得到了在角点处的塑性增量应力应变关系，在角点上剪应力增量与剪应变增量间是单值确定的。
Then the increment stress - strain relation of plasticity on the corner of the yielding surface is presented by the Koiter theory which is connected with the above hardening function.
从理论上说明塑性应变增量的方向不仅与应力的主方向有关，还与应力增量的方向有关。
The theoretical result shows that the direction of plastic strain increment is determined by the direction of principal stress and stress increment.
本文采用有限元法和增量理论对小位移小应变的弹塑性接触问题进行分析。
In this paper, the contact problems of small displacement and strain have been analysed by finite element method and incremental theory.
基于分段线性塑性理论和断裂力学理论，提出了一种二维的全量形式和增量形式的粘性裂纹的本构模型。
On the basis of piece-wise-linear plasticity and fracture mechanics, this article presented a 2-dimensional holonomic and nonholonomic constitutive model for cohesive crack of concrete-like materials.
基于分段线性塑性理论和断裂力学理论，提出了一种二维的全量形式和增量形式的粘性裂纹的本构模型。
On the basis of piece-wise-linear plasticity and fracture mechanics, this article presented a 2-dimensional holonomic and nonholonomic constitutive model for cohesive crack of concrete-like materials.
应用推荐