基于ABAQUS的显式动力学分析方法研究

显式动力学(The Explicit Dynamic)是针对隐式求解器的一个补充,其分析方法对于求解广泛、各类非线性结构力学问题是一个非常有效的工具,显式方法中的单个增量步取决于模型的最高固有频率,与持续时间、载荷类型无关。ABAQUS/Explicit主要用于碰撞、接触以及失效分析。探讨了ABAQUS显式动力学的基本理论、求解的问题,对显示动力学分析方法中的求解算法、稳定时间极限和能量平衡问题进行研究,给出了显示动力学分析的一般性分析方法。通过案例验证了该方法的可行性,应用该方法可有效解决实际工业生产中的碰撞问题、复杂的接触问题以及复杂的后屈曲问题,可为显式动力学分析方法应用于工程实践奠定理论与方法基础。     

夏热冬暖地区住宅平面设计与空调能耗关系分析

夏季住宅空调能耗已成为目前广州地区电力过荷的一个主要原因，而目前建筑师对住宅设计中的空调能耗因素并未有深入的考虑。本文就广州地区中高层住宅标准层平面设计中的朝向、形状、大小及层高与空调能耗关系进行了相关的分析，适用于夏热冬暖地区。     

沉降路段供水管线穿越障碍方法探讨

结合工程实际 ,对市政沉降路段上的给水压力管线 ,如何穿越障碍 ,减少不均匀沉降提出了具体的措施及相应建议     

Block noninteracting control with stability via static state feedback

Necessary and sufficient conditions for the existence of a static state feedback that achieves noninteraction and internal stability are obtained. This is accomplished by first characterizing the set of all controllability subspaces (distributions) that can arise as solutions to the noninteracting control problem. This characterization is then used to identify a fixed internal dynamics that is common to every noninteractive closed loop. The stability properties of this dynamics is shown to be the key factor in the problem of achieving noninteracting control with internal stability.     

智能ABC输入法中特殊用键的应用

根据作者几年来的数学和实践经验，对智能ABC输入法的特殊用键的用法作以介绍。     

Solving applied general equilibrium models represented as a mixture of linearized and levels equations

General equilibrium moels are usually represented as a system of levels equations (e.g., in North America) or a system of linearized equations (e.g., in Australia). Either representation can be used to obtain accurate solutions. General-purpose software is available in both cases-GAMS or MPS/GE is typically used by levels modellers and GEMPACK by linearizers. Some equations (notably accounting identities) are naturally expressed in the levels while others (especially behavioural equations) are naturally expressed in a linearized form. This paper describes the new GEMPACK facility for solving models represented as a mixture of levels and linearized equations and discusses the advantages to modellers of using such a representation.     

Curvilinear grids for WENO methods in astrophysical simulations

We investigate the applicability of curvilinear grids in the context of astrophysical simulations and WENO schemes. With the non-smooth mapping functions from Calhoun et al. (2008), we can tackle many astrophysical problems which were out of scope with the standard grids in numerical astrophysics. We describe the difficulties occurring when implementing curvilinear coordinates into our WENO code, and how we overcome them. We illustrate the theoretical results with numerical data. The WENO finite difference scheme works only for high Mach number flows and smooth mapping functions, whereas the finite volume scheme gives accurate results even for low Mach number flows and on non-smooth grids.     

《数据结构与算法》教学方法改革探讨

《数据结构与算法》是理论与实践并重的计算机专业的核心课程,该课程理论和实践知识体系难度均较大,学生反映课程枯燥难学、兴趣匮乏。针对目前学生的学习过程中遇到的困难,结合应用型人才培养目标、学生及课程的特点,对教学方法进行多方面的探讨,提出案例教学、加强学生课堂参与度、重视理论与实践紧密结合、多种手段辅助教学、以赛促学、上机考试考核制度等教学方法。     

电石生产项目的环境保护措施

密闭电石炉生产过程中产生的炉气必须经过净化除尘综合利用，针对全密闭式电石炉炉气净化问题，论述了3种环保措施。