Results 61 to 70 of about 17,412 (176)
Study on hydrodynamic response characteristics of double moored floating box considering influence of connection stiffness and length [PDF]
Objective Articulated multiple floating structures are not only subject to wave excitation forces, but also to other nonlinear loads such as connection forces, mooring forces and diffraction forces between floats, making it challenging to predict their ...
Chong WANG +3 more
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International Journal of Applied Linguistics, EarlyView.ABSTRACT With the increasing number of Chinese international students in Australian universities, intercultural competence has become a critical factor influencing their interactions with Australian tutors in university classroom settings. Existing research often examines students’ intercultural competence from a single‐method or single‐perspective ...
Jiangyu Han, Linda Tsung
wiley +1 more source
, 2008 通过小当量爆炸实验研究爆源近区地下结构动力响应和材料破坏行为。研究了地下管道结构的爆炸振动效应,分析了混凝土材料在爆炸冲击波作用下的破坏行为。结果表明,爆炸振动波使地下管道结构发生以瞬态径向压缩为主的变形,以及沿轴向和环向两方向的刚体振动响应。在爆源近场随爆炸折算距离变化,爆炸冲击波可以引起混凝土管道结构的3种破坏行为,即结构破坏 ...
马维
core
Centrifuge model test on dynamic response of sandy foundation with clay interlayer [PDF]
Natural riverbed overburden is often composed of stratified deposits of various soil types, resulting in a complex structure commonly accompanied by clay interlayers. This study conducts a series of centrifuge shaking table model tests to investigate the
CHEN Jinyi1, 2 , FU Zhongzhi1, 3 , CHEN Shengshui1, 3, CHEN Cong1, CHEN Chenghao1, 3
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Policy Studies Journal, EarlyView.ABSTRACT Why did Australia go from the White Australia Policy, which excluded non‐whites, to institutionalizing multiculturalism policy in the 1970s? This question defies traditional political ideologies of the major political parties, which had long supported the White Australia Policy. This article is a rare empirical demonstration of the Five‐Thread
Julius C. S. Mok
wiley +1 more source
Jixie chuandong, 1991 本文对一完整双联斜齿轮在动载荷和离心力作用下结构中的位移和应力场进行了计算研究。首先建立了双联斜齿轮的三维有限元模型,用[1]中的方法求得了相应结构振动最低几阶固有频率及振型。用模态坐标变换将有阻尼弹性系统二阶常微分有限元动态运动方程组转换成无耦合微分方程,根据系统计算出的真实动载荷用振型叠加法计算了双联斜齿轮的稳态响应。本文还研究了离心力对齿轮位移及应力分布的影响,并与齿轮结构中的动位移及动应力进行了对比分析。全文的计算是在微机上完成的。
刘更, 何大为, 沈允文, 高向群
doaj
Issue Attention in Public Opinion Polls: Pollsters as Agenda Responders and Agenda Setters
Policy Studies Journal, EarlyView.ABSTRACT Polling organizations, like other policy actors, must prioritize certain issues. We argue that, for normative and financial reasons, pollsters prioritize issues that are viewed as important by other institutions and the public, leading them to focus survey questions on issues that are on congressional and media agendas, and which are public ...
Qian Zhang +2 more
wiley +1 more source
Gaoya dianqi, 2022 海上风电联接变压器作为海上风电场的主要设备，其抗震安全性关系到海上风电场的平稳运行。针对海洋平台—附属电气设备在地震作用下的动力传递过程及楼层反应谱研究，以及电气设备的动力响应特性和自身薄弱部位研究，开展了变压器1∶10模型比尺的振动台模型试验研究；模型试验与数值仿真分析结果的对比表明，海洋平台的动力特性会显著影响传递至设备底部的地震加速度的低频部分；结构的应力薄弱部位发生在储油柜下方支架处。基于弹性相似的振动台缩尺模型试验可以反映原型结构的地震动响应特性，为附属设备的抗震反应谱研究提供依据 ...
陈健云 +7 more
doaj
Typical Elasto-Plastic Constitutive Models and Their Sensitivity Studies of Earth Materials [PDF]
, 2015 岩土类材料的非线性力学行为研究对于土-结构相互作用体系或者坝-地基-库水耦合体系的地震动力响应分析具有重要意义。比如砂土液化可能导致地基失效，继而引起上部结构破坏。混凝土坝的损伤开裂有可能演化成为坝的整体破坏甚至溃坝等重大灾变行为。因此深入研究岩土类材料地震过程中非线性破坏的力学行为是非常必要的。基于此，本文深入研究了三维J2模型，Cap模型、与压力无关多屈服面黏土（MYS）模型、与压力有关的多屈服面可液化砂土模型（包括砂土剪缩，剪胀，液化和应变滑移等复杂力学行为）、Drucker ...
邱志坚
core
A review of platform designs for floating offshore wind turbines [PDF]
The vigorous development of wind power generation technology is the core path for the country to promote the low-carbon energy transformation and realize the "dual-carbon" (carbon peaking and carbon neutrality) goals.
Jianhua ZHANG +3 more
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