给出一个适用于平面断裂力学分析的新边界积分方程，在此方程的基础上建立了边界元数值计算方法。

A new boundary integral equation is introduced to analyze plane elastic problems with cracks, and the boundary element numerical method based on this equation is established.

youdao

结合大功率柴油机性能强化的数值计算，在考虑螺纹的基础上建立了气缸盖螺栓的CAD装配体模型；

With the numerical simulation of heavy-duty diesel engine to strengthen performance, a CAD assembly model of cylinder head bolt is built based on the thread.

youdao

采用这种数值模式进行计算，得到了1998年5月1935卡林顿周稳定和自洽的背景太阳风，这为模拟CME事件打下了基础。

With the numerical model, we get a stable and self-consistent background solar wind of Carrington rotation 1935 at May 1998. This makes a foundation for simulating CME events.

youdao