摘要：The inverse heat conduction method is one of methods to identify the casting simu- lation parameters. A new inverse method was presented according to the Tikhonov regularization theory. One appropriate regularized functional was established, and the functional was solved by the sensitivity coeffcient and Newton-Raphson iteration method. Moreover, the orthogonal experimental design was used to estimate the ap- propriate initial value and variation domain of each variable to decrease the number of iteration and improve the identification accuracy and effciency. It illustrated a detailed case of AlSi7Mg sand mold casting and the temperature measurement ex- periment was done. The physical properties of sand mold and the interfacial heat transfer coeffcient were identified at the meantime. The results indicated that the new regularization method was effcient in overcoming the ill-posedness of the inverse heat conduction problem and improving the stability and accuracy of the solutions.

摘要：采用计算机仿真技术对李仙江石门坎水电站拱坝施工全过程进行模拟计算和仿真分析,合理安排施工进度,对拟定的缆机和塔机施工方案的各项主要参数指标进行了定量分析,为直观反映拱坝施工过程提供了有效的分析工具,在很大程度上减轻了设计工作的困难,又提高了其科学性。

摘要：文章采用ANSYS有限元软件,计算研究某海岛渔港透空式防波堤桩基工程的锚岩桩在不同锚固长度条件下,其锚束受力的特性。基于工程地点的建设条件,选择适当的模拟参数建立锚岩桩数值计算模型,对3种不同锚固长度的锚岩桩进行数值模拟,计算锚岩桩锚固长度变化时的受力值,分析不同锚固长度的锚束轴向位移、应力、轴力以及水泥砂浆粘结力随荷载的变化,以及沿锚固深度的分布规律,确定7 m是该工程锚岩桩合理的锚固长度,其计算方法不仅可用于设计阶段锚岩桩锚固长度的计算,同时也为同类工程进行设计计算锚固长度提供了参考。

摘要：低压铸造工艺是通常情况下铝合金活塞的铸造中的核心工艺技术之一,想要进一步提高铝合金活塞制造质量,需要对低压铸造过程进行更加精准的掌控。通过ANSYS软件建立铝合金活塞的几何模型,运用网格划分将几何模型转化成有限元模型,设置相关低压铸造参数,在软件中进行低压铸造工艺的有限元模拟,完成有限元模拟方法设计,并设计实验对方法有效性进行了论证。

摘要：本文给出了结构模态参数对设计变量的灵敏度计算式，并以４２００轧机主传动系统为例，对其模态参数进行了灵敏度分析。

摘要：本文旨在探讨岩土工程中土体断裂机理的数值模拟研究。通过对土体断裂机理的深入分析,运用数值模拟方法对其进行研究并得出相关结论。本文分为五个方面,分别为:(1)土体断裂机理的研究现状;(2)数值模拟方法的选择;(3)模拟参数的选取;(4)模拟结果的分析;(5)结论及未来展望。