| 1. | Besides , the new algorithm is applied to the static contact bems
本文讨论了正则化算法在静态接触边界元法中的应用。 |
| 2. | A constitutive model of 3d contact with friction is established with the use of penalty parameter and an incremental statement of problem is carried out
借助罚因子建立了三维摩擦接触边界的本构模型，给出了三维摩擦接触问题的增量描述，推导了接触问题的互补虚功方程。 |
| 3. | Some good characteristics of bem are lost as a significant cost ; the contact boundary conditions can not be satisfied on whole boundary , even in the sense of discretization
付出的代价是丧失了边界元法原有的一些优良特性，接触边界条件在离散意义下也不能再在整个边界单元上精确满足。 |
| 4. | In this paper , based on comprehensive analysis of the dynamic variation of the contact interface between the workpiece and its dies , material methods to identify and handle the dynamic interface conditions are presented
本文在全面分析成形中工件与模具接触边界动态变化的基础上，给出了动态边界条件识别与处理的具体方法。 |
| 5. | When plastic fem is used to numerically simulate the process of sheet metal forming , handling of dynamic contact interface conditions between the workpiece and its dies is needed to obtain credible computational results
采用塑性有限元法对金属板料成形过程进行数值模拟时，为获得可信的计算结果，需要对工件与模具间动态接触边界条件进行处理。 |
| 6. | Abstract : when plastic fem is used to numerically simulate the process of sheet metal forming , handling of dynamic contact interface conditions between the workpiece and its dies is needed to obtain credible computational results
文摘:采用塑性有限元法对金属板料成形过程进行数值模拟时，为获得可信的计算结果，需要对工件与模具间动态接触边界条件进行处理。 |
| 7. | The important aspect in the analysis of coupled electromagnetic - mechanical problems is the consideration of the coupled interaction between the electromagnetic field and the deformation / force on the contact boundaries , which leads strongly non - linear behaviors
摘要电磁接触耦合作用的力学分析的难点是必须考虑电磁场以及由此引起的电磁力与可移动接触边界间的耦合作用，属于强非线性问题。 |
| 8. | The mechanical parameters of the near - boundary - point in multi - domain bems and contact bems are evaluated successfully by utilizing the regularization algorithm . thereafter , it makes that the application of boundary element methods in engineering is widened
本文运用几乎奇异积分的正则化算法，成功求解了多域边界元法和接触边界元法中近边界点的力学参量，进一步拓宽了边界元法的应用范围。 |
| 9. | The boundary integral equation for elasticity is derived through the general green ’ s formula and the corresponding fundamental solution . the paper represents the contact conditions , which are essential for the coupling of the boundary integral equations of the two different elastic contact bodies , in a local coordinate system properly chosen
利用广义格林公式和基本解得出弹性问题的边界积分方程,采用循环迭代的方法,通过寻求与接触条件相协调的接触边界位移及面力增量来确定接触区域的大小。 |
| 10. | Therefore it is started with the derivation of variational equation , full formulations including contact boundary conditions , internal forces of shell element are given , and the algorithms for contact - surfaces searching , contact - force computation , and even time integration for the response computation are listed as well
为此，文中从推导变分方程开始，给出了包括接触边界条件、壳单元内力计算在内的全部列式，并列出了识别接触界面的搜索算法，接触力计算以及动力响应计算的时间积分算法的有关公式等等。 |
