高跟肉丝少妇A片在线-青青青国产在线观看免费-亚洲欧美另类在线图片区-欧美又粗又大xxxxbbbb疯狂-亚洲熟女少妇一区二区

Press-Hardened and Roll-Formed Lightweight Bumpers in Steels with Enhanced Strength

2018-10-16 09:52:00
LUQIMENG
Original
7595

-Bumpers protect the BIW and external attributes in low speed collisions and contribute to crash safety in high speed collisions (transfer loads to the BIW).


-They are continuously improved through implementation of materials with enhanced strength,new design features, new manufacturing processes, reduction of number of components andreduction of package space.





Objectives:
-Reduce weight of bumpers with roll-formed beams.
-Manage high speed crash w/o rupture of materials or welds.
-Fulfill world wide low speed crash requirements.
-Investigate new materials with higher strength.


Solution:
-Beam section with modularity possibility and press-hardened crash boxes.


Simulation set- - up
-Three point bending.   


Variables
-Dimensional variations.
-Automatic optimization.

M- - profile
-10.4% higher energy
absorption / mass unit
than benchmark beam.

       


F ront bumper:
-Cross beam 1200 MPa 1.2 mm.
-Crash boxes PH 1200 MPa 1.2 mm.
- Weight 6.37 kg = - - 13%  (compared to benchmark bumper). 


Modularized:
Section depth increased by 10 mm.



Objectives:
-Reduce the necessary package space for rear bumpers.
-Manage high speed crash without rupture of materials or welds.
-Fulfill world wide low speed crash requirements.
-Investigate new press hardening materials with higher strength.


Solution:
-Implement patch technology on press hardened beam with deformable section.

Innovation:
-Patch technology – additional material only where
needed.
-For improved high speed crash performance.





Front  bumper , press- - hardened beam and  crash boxes

A beam in press-hardened un-coated quality with ~2000 MPa tensile strength isgood for crash applications, as are crash boxes in press-hardened three-layered 1200 MPa material.


Using these materials can reduce the weight of a present front bumper by ~15%.



Front b b umper , roll- - formed beam , press- - hardened crash boxes


A beam with roll-formed M-profile in 1200 MPa is 10.4% lighter than benchmark roll-formed beam.
The M-profile is possible to modularize, in order to increase the bending stiffness and/or adapt to fit
with the package requirement.
A beam with M-profile in 1200 MPa material and crash boxes in press-hardened 1200 MPa material
is 13% lighter than benchmark bumper and still deliver superior crash performance.



R ear b b umper , press- - hardened beam with patch
A beam in press-hardened un-coated quality with ~2000 MPa tensile strength.
The bumper fulfills world-wide low speed crash requirements.
The bumper beam only experiences minor material failure in high speed impacts.
The patch, including heat-affected zones, remain completely intact.

Write a Comment
Three multiply Zero =
Comment will be posted after it is reviewed.
QR Code
主站蜘蛛池模板: 精品无码久久久久久尤物| 亚洲精品一区二三区不卡| 欧美z0zo人禽交欧美人禽交| 天堂中文8资源在线8| 国色天香在线视频www| 国内精品人妻无码久久久影院蜜桃 | 久久婷婷色五月综合图区| 亚洲视频日韩视欧美视频| 久章草在线无码视频观看| 精品国产成人a区在线观看| 亚洲中文av一区二区三区| 亚洲高清一区二区三区不卡 | 男女性高爱潮久久| 亚洲欧美日韩中文久久| 久久久久香蕉国产线看观看伊| 99爱国产精品免费高清在线| 亚洲中文字幕无码一区| 一个本道久久综合久久88| 久久久无码精品亚洲日韩蜜臀浪潮| 韩国19禁主播深夜福利视频| 国产真人无码作爱免费视频| 狠狠噜天天噜日日噜视频麻豆| 亚洲精品97久久中文字幕无码| 香蕉久久夜色精品升级完成| 性做久久久久久久免费看| 99久久精品国产毛片| 国产亚洲3p无码一区二区| 天天躁夜夜躁狠狠久久| 亚洲a∨国产高清av手机在线 | 人人爽人人爽人人片av| 亚洲熟女乱综合一区二区| 国产亚洲曝欧美曝妖精品| 日韩精品 在线 国产 丝袜| 欧美在线人视频在线观看 | 国产产无码乱码精品久久鸭| 东北老女人高潮大叫对白| 免费看黄色片| 亚洲va久久久噜噜噜久久男同| 久久精品人妻无码一区二区三区| 岛国无码av不卡一区二区| 欲色影视天天一区二区色香欲|