| 查看: 656 | 回复: 2 | |||
weikaihere木虫 (正式写手)
|
[交流]
美国Northeastern University 结构工程方向博后招聘 已有1人参与
|
|
（Some comments：美国教授，年富力强，为人非常nice。学校地处Boston中心区，在经费如此短缺的今天，机不可失啊。） 特别声明：Only applicants with with large-scale testing experience are considered. Project Description: Renewable energy is critical to the long-term sustainability of the world. In particular, wind energy, a vast resource, has the potential to totally transform the worldwide energy economy. U.S. The U.S. Department of Energy (DOE) lists the development of renewable energy sources as an immediate national need, and has set a target for the U.S. to generate 20% of its electricity from wind energy by 2030. Currently, the United States generates ~3% of its electricity from wind energy, and it is clear that transformative advances in wind generated energy technology are vital to obtain the ambitious vision of the DOE. Specifically, wind turbine towers must be manufactured taller and cheaper. Keystone Tower Systems has developed an innovative manufacturing technology, based on automated spiral welding that enables conical, slender towers to be produced on-site in a highly efficient fashion. The benefits to this are two-fold: first, the automation reduces production costs dramatically compared to traditional practices and, second, the on-site fabrication precludes transport limits that currently inhibit both tower height and the structurally optimal distribution of material. An important barrier to the deployment of this technology is a lack of fundamental understanding of the limit states for this particular structure and, generally, for slender shells. To overcome this barrier, Northeastern University and Johns Hopkins University propose a program of fundamental analytical and experimental research into the limit states of and design standards for slender towers with particular emphasis on those manufactured with spiral welding. Existing design methods for slender towers and shells are unsatisfactory, relying on overly conservative, empirically derived knockdown factors, not having a firm probabilistic basis, and never having been applied to spiral welded pipe loaded in flexure. We propose to probabilistically characterize the controlling limit states of slender tubes and, based on this characterization, develop a rigorous reliability-based design approach. Directly coupled with this academic effort, KTS will develop and prototype its manufacturing process and imperfection assessment procedures with explicit consideration of the cost-benefit tradeoff between manufacturing tolerances and structural performance. 为防止垃圾邮件，有意者请先发CV至weikaihere@msn.com，索要详细招聘信息。 |
回复此楼» 猜你喜欢
帮忙看看fileCode
已经有8人回复
-
小木虫上这么多卖论文的，真有人买论文么？感觉没必要啊
已经有3人回复
-
FileCode能看出啥？
已经有15人回复
-
filecode
已经有8人回复
-
确定了，国自然21号放榜
已经有7人回复
-
综述论文作为代表作会不会影响评审专家的印象分？
已经有11人回复
-
关于代码变化问题，想知道的进来
已经有24人回复
-
为什么网上很多人说本周 12号出结果
已经有3人回复
-
静等基金结果
已经有16人回复
-
我的国基提前知道中了，可是同事的操作让我实在接受不了，怎么会有这样的人
已经有11人回复
» 本主题相关价值贴推荐，对您同样有帮助:
zyaizsz
铜虫 (小有名气)
- 应助: 1 (幼儿园)
- 金币: 2196.5
- 散金: 20
- 红花: 1
- 帖子: 218
- 在线: 57.2小时
- 虫号: 1881995
- 注册: 2012-07-06
- 性别: GG
- 专业: 结构工程
2楼2013-12-16 10:42:56
weikaihere
木虫 (正式写手)
- 应助: 92 (初中生)
- 金币: 1811.3
- 散金: 66
- 红花: 2
- 帖子: 406
- 在线: 257小时
- 虫号: 865040
- 注册: 2009-10-08
- 性别: GG
- 专业: 防灾工程
3楼2013-12-16 22:22:51
100