使用ANSYS自动接触技术的方法Word格式文档下载.docx

1、此过程在其他CAE软件中须采用手工方式完成,不仅需要漫长的虚拟整机建立过程,同时,还需要工程师对结构的各项指标、限制、风险全面的了解。每一个有经验的有限元分析工程师都知道,没有任何两个接触问题是完全一样的,装配问题的复杂性在某种程度上肯定了ANSYS在这个领域的成就ANSYS可以对各种不同的接触问题进行非常好,而且简便的模拟。一个装配体的ANSYS有限元分析过程可以简单的归纳为, 建立模型并划分网格 识别零部件相互关系 施加边界条件以及环境参量 求解并复查结果 事实上在ANSYS默认的设定中,当一个装配体的CAD模型被倒入的时候,接触关系已经被自动的探测了,而接触区域被指定为面/面cultur

2、e and entertainment venues, fitness centers, has a good ecological environment, job security measures）, these requirements are very straightforward, specific standards, also has a clear direction, more easily by a superior examination. Poverty assessment is to look at the per capita net income of th

3、e poor end of 2015 standards is . . Yuan, higher standards is poverty. Superior acceptance to entrust a third party institution from HouseImplementation. After acceptance, also through spot checks, visits, telephone surveys looking activities. This means that our achievements have been recognized by

4、 the poor for poverty alleviation through acceptance, which we put forward higher requirements for poverty eradication. Therefore, the County Office for poverty alleviation to evaluation efforts in this regard. To implement the grid management model, integrating poverty alleviation into grid managem

5、ent, and make a heart activity combined package of leading cadres implement monitoring systems for poverty alleviation, each poor households identified a package cost. In this regard, you can design a form, indicating the poor basic causes, current income, poverty, support measures, implementation o

6、f support measures, through helping income, annual revenue. From now on, protection officers working households, household-by-place. When the examination, which the poor dont have time to get out of poverty, and holding people accountable. Third, on environmental protection in construction of ecolog

7、ical civilization is the focus on one of the six battle this year. Xian Wei proposed to build green mountains and beautiful, happy and harmonious new . . Target, which is the basis of environmental protection. Do well environmental protection work, we keep the side of the mountains, nor to the masse

8、s to create a suitable for residential and business suitable for swimming and raising living and working environment. Last year, we got good grades the environmental work, atmospheric index ranked 4th in the city to obtain eco-compensationaccording to project needs, in accordance with the channel, u

9、se the same, and use principle, the implementation of project planning, funding and manpower arrangements, avoiding duplication of inputs and waste of resources, effective integration of poverty relief funds . Here to remind everyone that bundle integration-related funds, aims to concentrate financi

10、al resources for big undertakings. Authorities do not think that has less autonomy, pursuing the deregulation of work. This year on the amount of funds on fighting for the departments concerned to increase over the previous year . and . respectively. In this regard, the financial Department to dispa

11、tch in a timely manner, analyses relevant departments strive for. （E） to implement the poverty assessment responsibilities. Of village-level evaluation is very clear, that is, five-ten （five-way path, power, through water, through radio, television, information; Ten the hanlaobaoshou fields, rich pr

12、ojects, Office kitchen, health services, sanitation system, pre-school education, 关系。这个默认的设定可以在“Simulation Contact”设定选项的Option对话框中更改。默认的接触自动探测属性适合于大多数的接触问题。然而,附加的接触关系控制设定拓宽了可以模拟的接触类型。在接触关系控制设定中, 全局属性,包括自动接触探测的基本设定,以及高亮显示的接触区域的透明度设定,这些设定将会影响所有的接触区域。接触区域控制,包括接触属性浏览,区域接触类型设定,以及其他的一些高级控制选项,例如设定接触模拟方程,法向

13、刚度,热传导设定,以及pinball区域设定等等。更加详细地,自动接触探测的基本设定包含,容差设定（Tolerance setting）,即容差类型以及容差值的设定;接触探测的种类设定（例如设定探测面/面接触,面/边接触以及边/边接触）等;接触探测种类优先权设定（例如设定面/面接触优先于其他种类的接触）等。在接触区域控制的接触类型设定中,ANSYS可以模拟如下的多种接触类型, 固结（Bonded）,即完全绑定,无摩擦也无滑动。不分离（No separation）,和固结类似,不过在小范围内允许无摩擦的滑动。无摩擦（Frictionless）,部件之间摩擦系数为0,允许法相分离。粗糙（Rough

14、）,与无摩擦类型相似,只是部件之间不允许接触滑动。culture and entertainment venues, fitness centers, has a good ecological environment, job security measures）, these requirements are very straightforward, specific standards, also has a clear direction, more easily by a superior examination. Poverty assessment is to look at

15、the per capita net income of the poor end of 2015 standards is . . Yuan, higher standards is poverty. Superior acceptance to entrust a third party institution from HouseImplementation. After acceptance, also through spot checks, visits, telephone surveys looking activities. This means that our achie

16、vements have been recognized by the poor for poverty alleviation through acceptance, which we put forward higher requirements for poverty eradication. Therefore, the County Office for poverty alleviation to evaluation efforts in this regard. To implement the grid management model, integrating povert

17、y alleviation into grid management, and 有摩擦的（Frictional）,部件之间会因摩擦系数而产生剪切力。在接触区域控制的高级设定中,使用者甚至可以设定潜在的接触模拟方法,在ANSYS 9.0版本中有如下选择, 广义拉格朗日法（Augmented Lagrange） 罚函数法（Pure Penalty） 多点约束法（Multipoint constraint,MPC） 拉格朗日法（Normal Lagrange） 具体每种模拟方法的数学模型在此不逐一介绍,简单介绍一下比较年轻的内部多点约束（MPC）算法。MPC算法适用于面对面、点对面的接触单元。使用该

18、方法时,ANSYS会根据接触运动建立MPC方程。内部MPC方法能够克服传统接触法则和其他多点约束方法的缺点。若与粘结接触结合使用,MPC方法可简化下列形式的接触装配和运动约束,固-固装配、壳-壳装配、壳-固装配、梁-固装配、刚性面约束以及任意面的载荷分布。内部MPC 方法可以克服传统接触算法和ANSYS中的其他多点约束工具的缺点,例如,接触面节点的自由度被消去;可以减小系统方程求解的波前大小;不需要输入接触刚度;对于小变形问题,它代表真实的线性接触行为;求解系统方程时不需要平衡迭代;对于大变形问题,MPC方程在每个平衡迭代中不断进行更新,克服了传统约束方程只适用于小应变的限制条件。 new .

19、 . Target, which is the basis of environmental protection. Do well environmental protection work, we keep the side of the mountains, nor to the masses to create a suitable for residential and business suitable for swimming and raising living and working environment. Last year, we got good grades the environmental work, atmospheric index ranked 4th in the city to obtain eco-compensation