你的位置:水利论文 >> 论文 >> 北京市 >> 清华大学 >> 详细内容 在线投稿

可压缩理想弹塑性裂纹定常扩展尖端场 【作者】罗学富 【导师】黄克智

热度154票 浏览82次 【共8条评论】【我要评论 时间:1988年7月01日 23:29

&tIS?.k'K0可压缩理想弹塑性裂纹定常扩展尖端
fl,k p#[ w&}4Z9g0

QlD0j*Sy1Y n0

QAtJy4ui(o0【作者】罗学富导师黄克智水利论文_9OI-a|
【作者基本信息】清华大学,固体力学,1988年,博士水利论文%Z8m5`2OIa,zyp v

水利论文P FB.e+w:V

水利论文6VA,};bpD;_OZ!|
【中文摘要】 本文给出了可压缩(ν<1/2)理想弹塑性平面应变准静态定常扩展裂纹尖端分析的正确提法,并采用三种方法进行了求解。第一种方法以学术界普遍接受的高玉臣与Rice等的不可压缩(ν=1/2)理想弹塑性扩展裂纹尖端场为基础,以ε=1/2-ν为小参数作摄动展开,得到了直到ε2阶的渐近解。第二、第三种方法分别以Rice从及高玉臣和黄克智对裂尖场问题的理论提法框架直接求解裂尖场渐近解。并对各种解法进行了比较。分析表明,可压缩理想弹塑性扩展裂纹尖端场由五区构成。当ν→1/2时,该五区解可以退化到不可压缩扩展裂纹尖端场的四区解。本文指出,Orugan等对扩展裂纹尖端场的分析在数学上是不适定的,因而在他们所得解的部分塑性区中,出现塑性流动因子为负的情况,即塑性流动法则已遭破坏。水利论文"XR_Q t!S4c

水利论文O g"dzL0Q5A*WJ NY|

【英文摘要】 The solution of near-tip fields for crack growing quasi-statically and steadily in elastic perfectly-plastic compressible (v<1/2) materials is a difficult problem unresovled for a long time in Fracture Mechanics. This paper gives correct formulations of the problem, and the correct solution is obtained by using three different methods. In the first method, which is initiated by present author, the perturbations expansions with ∈=1/2-v as a small parameter are proposed. Based on the solution for incompressible materials, the asymptotic solution of the order up to ∈2 is obtained. In the second and third methods, the Near-tip solutions are obtained based on the frames of theoretical formulations by Rice, and Gao and Hwang, respectively. It turns out that the upper plane of the near-tip field is divided into 5 sectors for compressible materials. As ∈→ o , the 5-sector solutions degenerate to the well-known 4-sector solutions for incompressible materials. It is pointed out that, in the ...更多solutions by Drugan et al., the plastic flow factor turns out to be negative in part of the plastic sector, hence the plastic flow law is violated.  还原水利论文^ `2cE%f(thE

水利论文,X+E/V+g2r b8d(r

 水利论文&P4R1w(T {

TAG: 黄克智 尖端 裂纹 定常 罗学富
顶:19 踩:21
【已经有114人表态】
13票
极差
9票
很差
12票
较差
15票
稍差
17票
稍好
14票
较好
20票
很好
14票
极好
下一篇:理想弹塑性Ⅰ型裂纹定常扩展尖端场【作者】韩斌 【导师】黄克智
上一篇:热冲击破坏分析【作者】樊学军 【导师】黄克智; 余寿文
水利论文安徽省电信网友 [nypd1doi] ip: 117.68.*.*
2015-11-02 09:09:21
Shuttle runs can help you boost  <a href="http://www.wholesalejerseysnflshop.us.com/">Wholesale NFL Jerseys China</a> stamina and learn to stop quickly. I <a href="http://www.wholesalejerseysnflshop.us.com/">Cheap Jerseys From China</a> t is also the sixth largest country and smallest continent on the pla. With a huge selection of eye-catching handbags, we suggest you to invest some time look <a href="http://www.wholesalejerseysnflshop.us.com/">Wholesale NFL Jerseys</a> ing for your flavor. Gardening is an excellent choice for calming your min
水利论文安徽省电信网友 [nypd1doi] ip: 117.68.*.*
2015-11-02 17:11:48
This leads to high cholesterol levels that can block the critical ca <a href="http://www.cheapnfljerseyschinashop.us.com/">Wholesale Cheap Jerseys</a> rdi arteries creating heart muscle fail <a href="http://www.cheapnfljerseyschinashop.us.com/">Cheap Jerseys From China</a> ure or can Wholesale Cheap Jerseys lead to gru elsewhere in the physique that trigger a coronary arrest and can progress to the heart. This possibly trusted <a href="http://www.cheapnfljerseyschinashop.us.com/">Cheap Jerseys</a>  on the internet gambling establishme
水利论文IANA网友 [dlsr90xc] ip: 114.97.*.*
2017-06-07 20:15:41
"Ashanti was born a few months after Chapman defected during a tournament in Rot <a href="http://www.max90irelandcheap.com/cheap-nike-air-max-90-premium/air-max-90-premium-mens.html">nike air max 90 premium mens ireland</a> t <a href="http://www.max90irelandcheap.com/nike-air-max-2017/nike-air-max-2017-mens.html">nike air max 2017 mens ireland</a> erdam in July 2009. That management position you’ve had your eye on, that one promotion that you got passed over for last year,nike air max 90 premium mens ireland, and your dream job may be waiting just beyond graduat <a href="http://www.max90irelandcheap.com/cheap-nike-air-max-90-hyperfuse/air-max-90-hyperfuse-womens.html">nike air max 90 womens ireland</a> i
水利论文IANA网友 [nypd1doi] ip: 36.57.*.*
2017-09-16 15:43:33
If there i <a href="http://www.canadateamshop.com/Canada-Guy-Lafleur-Olympic-Jersey/">Guy Lafleur Jersey</a> s a need to use the cutter, you have to understand that <a href="http://www.canadateamshop.com/Canada-Alex-Galchenyuk-Olympic-Jersey/">Youth Alex Galchenyuk Jersey</a>  it has been specifically designed that the worker would cut in the opposite direction.When one selects Compound inflation, there is a pretty cool <a href="http://www.canadateamshop.com/Canada-Jake-Muzzin-Olympic-Jersey/">Jake Muzzin Canada Jersey</a>  thing that happens.. Verify to have business cards handy and easily accessible wherever
水利论文IANA网友 [k0ey9cko] ip: 36.57.*.*
2017-09-16 16:14:14
The  <a href="http://www.creepervelvetkopen.nl/puma-heart-patent-bestellen/puma-heart-patent-wit.html">puma basket heart wit</a> motiva <a href="http://www.creepervelvetkopen.nl/">puma rihanna creeper kopen</a> tions individuals have for labeling vary. They make a statement through the dress they are wearing. But they do so in good conscience bec <a href="http://www.creepervelvetkopen.nl/puma-rihanna-slippers-bestellen.html">puma rihanna slippers kopen</a> ause this is what medical school taught and it is in line with conventional standards of practice. The same is true for most of the above behaviors ??th
水利论文IANA网友 [icpc7q5c] ip: 36.57.*.*
2017-09-16 22:59:16
Whether or not you're opening a new bar need barstools for your home bar <a href="http://www.wholesalejerseysfanatic.com/"> Cheap Nike NFL Jerseys China</a>  or even <a href="http://www.wholesalejerseysfanatic.com/"> Wholesale Jerseys</a>  giving your own bar a face lift, finding the right modern bar stools Toronto dealer is the initial step to offering your joint a great appear. The time frame of exposure determines the dosage of radiation <a href="http://www.wholesalejerseysfanatic.com/"> Cheap Jerseys</a>  energy that wi
水利论文IANA网友 [kse23p4d] ip: 36.57.*.*
2017-12-23 11:27:23
Sure, it doesn?t corner like a BMW,nike air max 90 fleur de jasmin, but  <a href="http://www.achatsneakers2017.fr/nike-air-max-90-fleur.html">nike air max 90 fleur de jasmin</a> it doesn?t seem like that?s what the V70  <a href="http://www.achatsneakers2017.fr/">nike air max 2017 pas cher</a> is going for, unlike the S80. This should be taken into account to get the best results. This can be necessary when there is a great amount of information to process. In terms of montage <a href="http://www.achatsneakers2017.fr/nike-air-max-2017/nike-air-max-2017-noir.html">nike air max 2017 noir hommes</a>
水利论文IANA网友 [dlsf08ec] ip: 36.57.*.*
2018-02-14 13:03:05
A PA or an executive secretary is a person who carri <a href="http://www.shoptheofficialbears.com/Elite-Eddie-Goldman-Bears-Jersey/">Eddie Goldman Jersey</a> es out a broad variety  <a href="http://www.shoptheofficialbears.com/Elite-Tarik-Cohen-Bears-Jersey/">Authentic Tarik Cohen Jersey</a> of managerial duties to assist different staff members and manages other duties connected exclusively to a place of work on the whole. With them, you reduce all chances of any error or below standard work and <a href="http://www.shoptheofficialbears.com/Elite-Eddie-Jackson-Bears-Jersey/">Eddie Jackson Jersey</a>  will always feel
查看全部回复【已有8位网友发表了看法】

广告投放

广告投放