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发表时间 : 2006-11-4 21:29:54 | 浏览 : 2625    评论 : 2
近来项目需要一个科学一些的动力学模型,在国内没几个人会这个,在网上和单位找了好些天,没有这样的人帮忙。
老板把这个节点最后又给我了,只能硬着头皮答应,并许诺七天时间完成。汗!我还不知道这东西难不难
一个从无到有的过程。

期间有什么心得和体会,愿意和大家分享!


今天之前对vp的动力学没有学过,今天是学习的第一天,
在第七天要拿出一个程序模型

  1. 第一天
复制代码

…………

  1. 第三天
复制代码

Each instance of a geometry class has an associated material,


The geometry classes provide utility functions that can be used to set or compute the mass properties of an
associated part. The center of mass, the mass and the inertia tensor can be computed from the geometric
properties in conjunction with the specified mass or relative density. Note that the relative density scales
with other density values set throughout the universe, and is not an absolute physical density. If the mass is
computed automatically from the geometries, the relative density is the real density. If the mass is manually
set, the relative density will be used to compute the center of mass of the object.



Note that the clone() function does not do a deep copy, and both geometries will share the same underlying
set of geometric data. If this data is changed, this is reflected in both of the clones. However, only the
geometric data is shared. Properties such as relative density and material id are not shared, and can be set
independently.

For example, to characterize a hinge motor, you set a desired angular speed and the motor’s maximum
torque. A torque no greater than this is applied to the hinged bodies to change their relative angular velocity,
until either the desired velocity is achieved, or the hinge angle hits an upper or lower limit, if one has been
set.


已做完!
[ 本帖最后由 obuil 于 2006-11-6 11:03 PM 编辑 ]

最近VR访客

obuil 评论于2006-11-4 21:30:08
占位!大家不要随便回复
独山子 评论于2006-11-4 22:40:50
加油!
逆水行舟,不进则退。

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