okay so what I'm gonna do is I'm gonna 好吧所以我要做的就是我要去
link a state structural and then also a 链接状态结构然后也是a
topology optimization so I'm sitting 拓扑优化所以我坐着
these this link up ahead of time let me 这些这个链接起来提前让我
also 也
I just want to change the material okay 我只是想改变材料好
so make it out of aluminium alloy okay 所以做出来铝合金 没关系的
so aluminium alloy alright so now let's 所以铝合金好吧现在让我们来吧
put our loads on okay so here I'm going 把我们的负荷放好吧所以我要走了
to insert a cylindrical support and I'm 插入一个圆柱形支撑，我
gonna leave it free in the tangential 会让它在切向自由
direction 方向
so in here I'm gonna insert a fixed 所以在这里我要插入一个固定的
support 支持
okay and in here I'm going to insert a 好的，在这里我要插入一个
promote force now what I'm going to do 现在推动我将要做的事情
is I'm going to use a vector so let me 我要使用矢量，所以让我吧
do the force first and then therefore 先行， 然后再做
the direction I'm going to choose 我要选择的方向
no I'm trying to trying to choose an 没有我试图想选择一个
edge so let me just choose two very 边缘让我只选择两个
Texas so that's the direction I want the 德克萨斯这是我想要的方向
force to go in that's effectively the 力在去是有效的
direction that the the spring was going 方向，该弹簧正要
in on the on the real model okay so let 在真正的模型上好吧就这样吧
me insert a sizing 我插入一个尺码
maybe we can go smaller than that so 也许我们可以去比这么小
let's use two millimeters okay so let me 让我们用两毫米好吧让我吧
insert equivalent stress and total 插入等效压力和总数
deformation 形变
okay so you can see the stress and me in 好吧所以你可以看到压力和我
that defamation as well so we can 这种诽谤也是如此
exaggerate that 夸大那个
okay so such a fairly chunky bit of 好了，所以这样 的 一个相当矮胖位
material so the the loads that's going 材料， 所以负载
to see in in service aren't really going 在服务中看到的并不是真的
to change much from what what we've 改变我们的想法
shown there because it's basically a 在那里显示，因为它基本上是一个
some sort of rocker being pivoted at one 某种摇杆在一个地方转动
end so there might be some sort of 结束所以可能会有某种形式
something other than a fixed support 固定支持以外的东西
there we're just simplifying the the 那里我们只是简化了
model for this for this demonstration 这个演示的模型
okay so now in the net apology 好吧，现在在网上道歉
optimization so we essentially have a an 优化所以我们基本上有一个
optimization region so we've also got an 优化区域，所以我们也得到了
exclusion region so anywhere with these 排除区域如此随处可见
loads it's it's got exclusions okay so 加载它是否有排除等等
what I'm going to do is I'm going to 我什么都做的是我要去
change those exclusions so what I'm 改变那些排除， 所以我是
going to do I'm going to insert a named 要去做我要插入一个名字
selection 选择
so I essentially would like to keep all 所以我基本上想保留所有
the areas that I am now grouping I'll 我正在分组的领域我会
give it a relevant name called exclude 给它一个名为exclude的相关名称
so now in my optimization region I've 所以我现在在我的优化区域
got exclusion defined by name selection 通过名称选择定义排除
and exclude so those phases there might 并排除那里的那些阶段
be important for for mounting there 对于安装在那里很重要
might be some sort of bearing surface on 可能是某种轴承表面
there so I want to I need to that 所以我想我需要那样做
surface needs to be integral with 表面需要与之成为一体
whatever part it comes up with so 它提出的任何部分都是如此
basically anywhere where it's got the 基本上它在任何地方都有
design region it can remove material 设计区域，它可以删除材料
from so we have a response constraint so 因此，我们有一个响应约束
here this is saying retain 50% of the 这就是说保留50％的
mass that's left over after the 之后留下的质量
exclusion regions are taken into account 排除区域被考虑在内
and the objective is to minimize the the 目标是尽量减少
compliance so just in here so compliance 合规， 所以只是在这里遵守
is essentially the inverse of stiffness 基本上是刚度的倒数
so when you're minimizing compliance 所以当你最小化合规性时
you're maximizing stiffness so the whole 你最大限度地提高了刚度
goal of this objective of this topology 这种拓扑的这个目标的目标
optimization is to maintain the same 优化是保持不变
stiffness with 50% of the mass so it's 刚度为50％的质量，所以它是
going to try and try and achieve that so 要去尝试和尝试，并取得有这么
here under the solution if we click 如果我们点击，这里解决方案
solve so with Thea the more recent 与Thea一起解决更近期的问题
versions of topology optimization or in 拓扑优化的版本或
fact from version 18 we've got a 从第18版我们得到了一个
topology density tracker so what this 拓扑密度跟踪器所以这是什么
does because this is an iterative 是因为这是一个迭代
process 处理
it started start sort of adding material 它开始开始添加材料
and in sort of organically growing the 并且有机地增长了
structure so here you can see it sort of 结构所以在这里你可以看到它
adding material so with each iteration 每次迭代都要添加材料
it's going to hopefully come up with a 这将有希望拿出一个
with a closed a closed shape or a shape 闭合的封闭形状或形状
that's a sorry shape that's continuous 这是一个持续的抱歉形状
okay so you can see it sort of growing 好的，所以你可以看到它有点成长
the the shape and then even sometimes 形状，甚至有时甚至
where there was material before it's now 在它之前有材料的地方
removed it so the idea is once you once 删除它所以这个想法曾经是你曾经的
it finish the solving you don't want 它完成了你不想要的解决方案
sort of little I like to call them 有点像我喜欢称呼他们
clouds that that aren't attached to out 这是没有附加到了云
to anything 任何事情
okay so that's getting ma'am 好的，这样才能成为女士
as the important thing is it's 重要的是它
maintaining the integrity of those those 保持那些人的完整性
surfaces over there which I need for our 那边面，我需要为我们的
mounting okay so so we go to the result 安装好，所以我们去结果
we can see we've got a retained 我们可以看到我们得到了保留
threshold 阈
so this is essentially what we're doing 所以这基本上就是我们正在做的事情
here is we're telling you orbit what 这是我们告诉你轨道是什么
we're going to try and manufacture okay 我们打算尝试制造好的
so you can see that there's some holes 所以你可以看到有一些漏洞
in there it's sort of I've got less 在那里，我有点少
material over here it's sort of cut out 材料在这里这有点切出
a window where we didn't have one before 我们之前没有过的窗户
okay so once we've got this we click on 好的，所以一旦我们得到了这个，我们点击
the results and we say transfer to 结果我们说转移到
design validation so what a design 设计验证那么一个设计
validation is is you're basically 验证是你基本上
checking on what the topology optimizer 检查拓扑优化器是什么
has output so here we need to update 有输出所以我们需要更新
so here first I have to refresh 所以首先我要刷新
okay now I can go into space claim 好的，现在我可以进入太空索赔了
okay say oops the one we need 好吧说我们需要的那个
okay so need to activate that alright so 好了，所以需要激活好吗所以
we've got the the facets so here if we 如果我们这样，我们就有这样的方面
go to whoops okay so we go to the facets 去哎呦好吧所以我们去了小平面
tab okay so I'm just doing a check so it tab 好吧所以我只是做一个检查所以它
says it's not watertight so let me try 说这不是不漏水所以让我试试吧
and auto fix okay so now if I check it 并自动修复好，所以现在，如果我检查它
again okay no problems all right so this 再好吧没问题，所以这个
geometry isn't isn't ready for for 几何不是没有准备好的
reanalyzing yet so what we need to do is 重新分析，我们需要做的是
we need to do what we call a a shrink 我们需要做我们称之为缩小的事情
wrap okay so I'm going to keep the 包好吧所以我要保留
original body so ten millimeters is the 原来的身体那么十毫米就是了
smallest face that it's going to try and 最小的面孔，它将尝试和
create so that's too big let's go to two 创造所以太大让我们去两个
millimeters 毫米
okay let me delete that shrink-wrap so I 好吧，让我删除拆封，所以我
want to preserve features that will keep 想要保留将保留的功能
any any sharp corners which is what I 任何尖角都是我的意思
want 想
nah 罗
so I'm just trying this is a bit of a 所以我只是尝试这是一个
trial and error process you have to sort 试错的过程，你必须排序
of try a few different different things 尝试一些不同的东西
so it's very important that you keep the 所以你保持这个非常重要
original body so then it's not not lost 原来的身体所以它不会丢失
okay so once we have that 好的，一旦我们有了这个
all right so now we can attempt to 好的，现在我们可以尝试
smooth so if I triple click it selects 如果我三击它选择，那么光滑
everything so you can see when it's 一切都让你可以看到它的时间
smooth that it creates basically creates 它创造的光滑基本上是创造的
a smoother geometry so you can see I've 一个更平滑的几何体，所以你可以看到我
still got the sharp edge around there 仍然在那里有锋利的边缘
which is what I want okay so so you can 这是我想好了，这样你就可以
sort of compare the old to the new so 那种比较旧 到新，所以
now I'm going to basically convert 现在我要基本上转换
convert this to a to a solid which I can 将其转换为固体，我可以
now which I can basically reuse or 现在，我基本上可以重用或
reanalyze 重新分析
okay I use slightly different boundary 好吧，我使用略有不同的边界
conditions too when I practice this it's 条件太当我练习这是
taking a little bit longer 再花一点时间
okay let me--just suppress that body 好吧，让我 - 只是抑制那个身体
that's the new new solid that I've that 这就是我所认识的 全新实体
I've got alright so go back to the 我没事，所以回去吧
project if i refresh that model 项目， 如果我刷新该模型
[Music] [音乐]
okay so if we look at the I'll just show 好吧，如果我们看看我会展示的
you the geometry 你几何
so it was essentially done with slightly 所以它基本上是略微完成的
different boundary conditions so this is 这是不同的边界条件
the geometry that came up with and then 出现的几何形状然后
inside the mechanical interface 在机械界面内
so we've used automatic virtual topology 所以我们使用了自动虚拟拓扑
so these basically groups faces together 所以这些基本上是团体面对面
into sort of larger larger patches and 到更大的更大的补丁和
then in the mesh with use what's called 然后在网格中使用所谓的
a a patch independent tetrahedron to 一个贴片独立的四面体到
then patch independent just means it 然后补丁独立就意味着它
doesn't respect the small geometry 不尊重小几何
patches which is we don't want to do 补丁是我们不想做
that because some of those are quite 因为其中一些是相当的
quite small so then if we look at the 如果我们看一下那就太小 了
equivalent stress compared to the the 等效压力相比
other model you can see that there's a 其他型号你可以看到有一个
lot more area that's more highly highly 更多的领域更高
stressed okay so that's 强调没关系，所以那就是
that's the that's the topology 这就是拓扑结构
optimization 优化