國產12代altis剛性真的好嗎? - 福特

By Olivia
at 2019-10-19T22:43
at 2019-10-19T22:43
Table of Contents
引用MunezSu的圖
https://i.imgur.com/36PSBgf.jpg
縱軸是應力、橫軸是應變,應力除以應變(斜率)就是模數用E表示
例如鋼材模數約207 GPa
也就是說在拉伸應力受207 MPa下的應變是0.001,等於1公尺的會被拉長1mm
鋼材強度跟剛性基本上沒啥關係
即使是高強度鋼材(1500 MPa)和一般強度(390 MPa),只要兩者模數相同
在線性區內相同受力(應力)下的變形量會一樣
那鋼材強度跟車體結構安全性有沒有關係呢?
有,但不是絕對!
假設某鈑件初始設計是980 MPa
但在CAE模擬撞擊時某結構件會受1200 MPa應力,那該鈑件會進行設變
1. 改用更高強度鋼材
2. 改變結構幾何設計(有效分散應力,降低應力集中)
3. 增加補強件reinforcements(降低應力集中)
但在沒有整車結構幾何設計、鈑件間搭接形式、焊點等資訊的前提下
純討論鋼材強度的數字完全沒有意義
甚至就算車體結構資訊都有,沒有用CAE軟體做完整的模擬或是實測
車體結構安全性都仍是未知數
每次都有你在推文亂誤導!
推 nctudaniel : 基本上 除了公佈撞測影片外 不然就公佈全車鋼材mpa10/18 23:09
→ nctudaniel : 分佈 才比較有參考價值10/18 23:09
→ nctudaniel : 這是最基本要求 神A既沒公佈全車mpa數 撞測影片也10/18 23:10
→ nctudaniel : 用動畫模擬..10/18 23:10
在設計階段用CAE軟體模擬評估撞擊測試是主流車廠的能力
安全性的模擬目標是做到定量而非定性,這在求解非線性碰撞上非常困難
光建立一個完整的車輛碰撞模型就得花整個團隊好幾週的工作時間
白車身薄殼元素,焊點搭接、膠合,詳細材料拉伸曲線
而碰撞非線性用顯式積分(explicit)對有限元素的品質特別要求
時域的分析取樣的單位時間點加上材料非線性跟接觸問題
即使是HPC實際執行碰撞運算也可能要數周時間
你以為是隨便做做動畫喔.....
推 vivi8770 : 這代有買,壓車頂板金,可以壓的下去10/19 08:08
→ vivi8770 : 上台福特,車頂板金硬多了 10/19 08:09
推 vivi8770 : 保桿的硬度也是,壓壓看就知道,福特比較硬10/19 08:23
還在看鈑金硬度.....要比硬度前擋玻璃可是比鈑金件高喔
隨便找個CAE碰撞分析的影片
https://www.youtube.com/watch?v=wwQq7Mwwf1A
是由主樑等作為"結構件"承受撞擊力,鈑金蒙皮對結構安全幾乎沒啥影響
剛性、強度、結構間的關係
不曉得是真的混淆搞不清楚呢,還是故意混淆呢?
其實不用特地發文來昭告天下自己不求甚解
--
All Comments

By Sandy
at 2019-10-24T21:28
at 2019-10-24T21:28

By Jessica
at 2019-10-25T22:33
at 2019-10-25T22:33

By Barb Cronin
at 2019-10-29T02:25
at 2019-10-29T02:25

By Edith
at 2019-10-30T07:52
at 2019-10-30T07:52

By Dinah
at 2019-11-03T02:27
at 2019-11-03T02:27

By Mason
at 2019-11-06T13:16
at 2019-11-06T13:16

By Yedda
at 2019-11-07T04:12
at 2019-11-07T04:12

By Hazel
at 2019-11-11T20:41
at 2019-11-11T20:41

By Iris
at 2019-11-16T14:07
at 2019-11-16T14:07

By Ophelia
at 2019-11-17T02:02
at 2019-11-17T02:02

By Valerie
at 2019-11-19T02:19
at 2019-11-19T02:19

By Adele
at 2019-11-23T02:14
at 2019-11-23T02:14

By Hardy
at 2019-11-26T06:17
at 2019-11-26T06:17

By Aaliyah
at 2019-11-26T09:03
at 2019-11-26T09:03

By Michael
at 2019-11-27T06:47
at 2019-11-27T06:47

By Cara
at 2019-11-28T01:15
at 2019-11-28T01:15

By Zora
at 2019-12-01T15:15
at 2019-12-01T15:15

By Andy
at 2019-12-04T20:11
at 2019-12-04T20:11

By Linda
at 2019-12-07T08:15
at 2019-12-07T08:15

By Hazel
at 2019-12-09T08:10
at 2019-12-09T08:10

By Sierra Rose
at 2019-12-10T13:50
at 2019-12-10T13:50

By Zenobia
at 2019-12-14T04:20
at 2019-12-14T04:20

By Caroline
at 2019-12-14T10:01
at 2019-12-14T10:01

By Catherine
at 2019-12-14T19:37
at 2019-12-14T19:37

By Regina
at 2019-12-16T04:17
at 2019-12-16T04:17

By Ula
at 2019-12-19T10:29
at 2019-12-19T10:29

By Brianna
at 2019-12-20T22:09
at 2019-12-20T22:09

By Regina
at 2019-12-24T04:47
at 2019-12-24T04:47

By Ula
at 2019-12-26T17:13
at 2019-12-26T17:13

By Ina
at 2019-12-28T01:58
at 2019-12-28T01:58

By Blanche
at 2019-12-30T18:33
at 2019-12-30T18:33

By Frederica
at 2020-01-04T17:12
at 2020-01-04T17:12

By Odelette
at 2020-01-06T22:41
at 2020-01-06T22:41

By Regina
at 2020-01-10T23:26
at 2020-01-10T23:26

By Liam
at 2020-01-13T12:42
at 2020-01-13T12:42

By Ula
at 2020-01-17T14:16
at 2020-01-17T14:16

By Ursula
at 2020-01-20T06:51
at 2020-01-20T06:51

By Queena
at 2020-01-23T01:20
at 2020-01-23T01:20

By Lucy
at 2020-01-24T13:18
at 2020-01-24T13:18

By Heather
at 2020-01-25T01:41
at 2020-01-25T01:41

By Freda
at 2020-01-28T19:21
at 2020-01-28T19:21

By Ophelia
at 2020-02-01T08:34
at 2020-02-01T08:34

By Brianna
at 2020-02-06T02:51
at 2020-02-06T02:51

By Gilbert
at 2020-02-07T21:06
at 2020-02-07T21:06

By David
at 2020-02-08T11:16
at 2020-02-08T11:16

By Skylar Davis
at 2020-02-12T02:54
at 2020-02-12T02:54

By Carolina Franco
at 2020-02-13T16:15
at 2020-02-13T16:15

By Madame
at 2020-02-15T00:05
at 2020-02-15T00:05

By Leila
at 2020-02-16T07:39
at 2020-02-16T07:39

By Hardy
at 2020-02-16T14:51
at 2020-02-16T14:51

By Ingrid
at 2020-02-21T13:00
at 2020-02-21T13:00

By Elizabeth
at 2020-02-25T01:53
at 2020-02-25T01:53

By Doris
at 2020-02-28T13:05
at 2020-02-28T13:05

By Zora
at 2020-02-29T17:34
at 2020-02-29T17:34

By Christine
at 2020-03-02T11:39
at 2020-03-02T11:39

By Poppy
at 2020-03-05T18:49
at 2020-03-05T18:49

By Madame
at 2020-03-08T08:53
at 2020-03-08T08:53

By Iris
at 2020-03-08T22:32
at 2020-03-08T22:32

By Eden
at 2020-03-09T16:20
at 2020-03-09T16:20

By Bethany
at 2020-03-12T19:25
at 2020-03-12T19:25

By Delia
at 2020-03-15T13:26
at 2020-03-15T13:26

By Adele
at 2020-03-16T10:39
at 2020-03-16T10:39
Related Posts
買百萬馬3盤子報到+比較菜單+1000km檢查

By Carolina Franco
at 2019-10-19T18:21
at 2019-10-19T18:21
[討論] Re: [問題] mazda3 二代 刮傷+凹痕

By Sierra Rose
at 2019-10-19T15:48
at 2019-10-19T15:48
各家車廠的信徒誰比較虔誠?

By Tristan Cohan
at 2019-10-18T20:40
at 2019-10-18T20:40
34歲買車會太早嗎?

By Audriana
at 2019-10-17T19:04
at 2019-10-17T19:04
第三年保單

By Carolina Franco
at 2019-10-16T23:32
at 2019-10-16T23:32