SolidWorks2012运动仿真完全教程

SolidWorks2012运动仿真完全教程

COSMOSMotion 运动仿真培训 COSMOSMotion 2008 Image courtesy of National Optical Astronomy Observatory operated by the Association of Universities for Research in Astronomy under cooperative agreement with the National Science Foundation. About this course关于本课程 Prerequisites前提条件 Course Design Philosophy课程设计原

理 Using this book本书使用方法 A note about files配套光盘说明 Conventions used

in this book本书中采用的原理 Class Introductions课程介绍 2007 SolidWorks Corp.

Confidential. 2Design Validation Products设计仿真产品 COSMOSWorks Adv.

Professional Professional COSMOSFloWorks Designer Flow Simulation Vibration Thermal Drop Test Static Buckling Nonlinear COSMOSEMS Fatigue Optimization COSMOSMotion Electromagnetic Post-dynamics 2007 SolidWorks Corp. Confidential. 3 What is Motion Simulation 什么是运动仿真 Study of moving systems or

mechanisms 运动系统或机构研究 Motion of a system is determined by 运动系统定

义: – Mechanical joints connecting the parts 零件的机械连接 – The mass and inertia

properties of the components 部件的质量和惯性特性 – Applied forces to the system

Dynamics 系统的作用力(动力学) – Driving motions Motors or Actuators 驱动运动

(运动或致动器) – Time 时间 2007 SolidWorks Corp. Confidential. 4Mechanism types机构类型 Kinematic System运动学系统 – Movement of parts under enforced or

constrained motion 外加或强制运动下的部件动作 – Fully controlled and only one

possible motion result irrespective of force and mass 不考虑力和质量的全约束和单一

运动的结果 – Zero degree of freedom 零自由度 Dynamic System动力学系统 –

Movement of parts under free motion subject to forces 自由运动物体与力作用下的零

件运动 – Partially controlled and infinite number of results depending on forces 依赖于

力 的部分约束和无限数量的结果 – Greater than zero degrees of freedom 自由度数

大于零 2007 SolidWorks Corp. Confidential. 5Understanding Basics运动基础 Mass

and Inertia质量和惯性 – Newton’s First Law牛顿第一定律 – Conservation of

momentum动力守恒 Degrees of freedom自由度 – Rigid body刚性物体 – Grounded

parts固定零件 – Moving parts运动零件 Constraints约束 – Restrictions placed on a

part’s movement in specific degrees of freedom Pendulum restrained y to pivot about mounting 作用在零件运动上的特定自由度的限制 point – Mechanical joints are

connections that restrict the movement of one part to another x – 机械关节是约束零件

相互运动的连接 Joint motion运动副 Gravity重力 2007 SolidWorks Corp. Confidential. 6 Constraint Mapping约束映射 Mapping of SolidWorks assembly mates

constraints to COSMOSMotion joints. 映射SolidWorks装配体配合(约束)为

COSMOSMotion的运动副 100 ways of defining SolidWorks mates. 100多种定义

SolidWorks配合的方法 Basic constraint types are merged to simplified mechanical joints. 基础约束类型合并为简化的机械约束 – One Orthogonal Concentric mate in

SolidWorks becomes a Concentric joint. – 一个正交同轴配合转化为同轴副 One

Coincident and One Orthogonal Concentric mates in SolidWorks becomes a Revolute joint. – 一个重合和一个正交同轴配合转化为一个转动 副 One Point to Point

coincident mate in SolidWorks becomes a spherical joint 7 – 一个点对点重合配合转化

为一个球副。 2007 SolidWorks Corp. Confidential.约束映射 什么是约束映射 是指

在2个指定的零件之间，自动地、智能的将装配关系 转化为最小的机构运动幅的形

式。基本的约束类型可以合并为 简单的机构运动幅，例如 e.g. 1 coincident joints

becomes a planar joint 2 orthogonal coincident joints becomes a translational joint 3

orthogonal coincident joints becomes a fixed joint 1 Coincident and 1 orthogonal concentric becomes a revolute joint 所有的装配约束被映射为连接，包括曲面和曲面

的约束 如: 圆柱面/平面相切、圆柱面/圆柱面相切 。这些是共有的连接 。 2007

SolidWorks Corp. Confidential. 8映射的约束 SW Geometry SW Geometry 装配关系

运动约束 注: Point Point 重合 PointPoint SolidWorks 中 Point Point 距离

PointPointDist 有100多种零件 Point Line 重合 PointLine 约束的方式 Point Line

距离 PointLineDist Point Plane 重合 PointPlaneDist Point Plane 距离 PointPlaneDist

Point Cylinder 重合 PointLineDist Point Cylinder 同轴 PointLine Line Line 重合