Authentication email has already been sent, please check your email box: and activate it as soon as possible.
You can login to My Profile and manage your email alerts.
If you haven’t received the email, please:
|
|
There are 6 papers published in subject: > since this site started. |
Results per page: |
Select Subject |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
1. Nonlinear analysis for a rectangular plate subjected to low velocity impact considering the effect of the structural deformation | |||
HU Yaqing,DAI Hongliang,LIN Zhongyan | |||
Mechanics 23 March 2018 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:In this paper, by applying the Hertz contact law and considering the effect of the structural deformation, the dynamic contact coefficient is proposed. On the base of the classical theory of thin plate, by using von Kaman equations the governing equations of the rectangular plate subjected to low velocity is built. Considering the effect of the structural deformation, the governing equations of contact force is coupled with that of the plate, thus the finite difference method is used and the displacement functions is discrete in space domains. Also, the Newmark method is used and the whole problem is solved by applying iterative method. The results shows the influence of boundary condition, material of the plate, impact speeds and other factors on the displacement, normal stress and contact force while considering the effect of the structural deformation. | |||
TO cite this article:HU Yaqing,DAI Hongliang,LIN Zhongyan. Nonlinear analysis for a rectangular plate subjected to low velocity impact considering the effect of the structural deformation[OL].[23 March 2018] http://en.paper.edu.cn/en_releasepaper/content/4744096 |
2. Description of structure shape implicitly using KS function | |||
Zhou Ying,Zhang Weihong | |||
Mechanics 23 December 2013 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Complex structure can be constructed of primitive geometries (such as cube, sphere, cylinder, and so on) by Boolean operations. However, Boolean operation is not analytic. In this paper, through the analysis of corresponding between Boolean operation and functional calculation, we propose a new shape description method based on a mathematical function―KS function. Using this method, complex engineering structures can be described by a single implicit function. We show applications of this method to 2D and 3D engineering parts. | |||
TO cite this article:Zhou Ying,Zhang Weihong. Description of structure shape implicitly using KS function[OL].[23 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4577742 |
3. Topology optimization involving thermo-elastic stress loads | |||
Gao Tong,Zhang Weihong | |||
Mechanics 18 January 2010 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Structural topology optimization of thermo-elastic problems is investigated in this paper. The key issues related to the penalty models of the element stiffness and thermal stress load of the finite element model are highlighted. To characterize the dependence of the thermal stress load upon the design variables defined by element densities, we apply the penalization to the thermal stress coefficient measured by the product between thermal expansion coefficient and Young’s modulus for the first time. In such a way, the element stiffness and the thermal stress load can be simultaneously penalized in terms of element pseudo-density. Besides, the RAMP is adopted as the interpolation model after a full study and comparison with the SIMP. Furthermore, sensitivity analysis of the structural mean compliance is developed in the case of steady-state heat conduction. This formulation demonstrates especially its capability of solving problems with multiphase materials. Numerical examples of two-phase and three-phase materials are dealt with. | |||
TO cite this article:Gao Tong,Zhang Weihong. Topology optimization involving thermo-elastic stress loads[OL].[18 January 2010] http://en.paper.edu.cn/en_releasepaper/content/39118 |
4. Evaluating Orthogonal Random Variables in Non-Gaussian Karhunen-Loeve Expansion | |||
Huang Shuping | |||
Mechanics 19 April 2006 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:A simulation algorithm is developed for generating non-Gaussian processes with a specified marginal distribution function and covariance function, especially for highly skewed non-Gaussian process. It is based on the Karhunen-Loeve (K-L) expansion in terms of deterministic orthogonal functions and uncorrelated K-L random variables. The deterministic functions are obtained from the spectral decomposition of the covariance function. For non-Gaussian processes, the distributions of the K-L variables are however unknown. The strategy for determining these unknown K-L distributions is given below. The validity of the proposed algorithm for simulating highly skewed non-Gaussian process is illustrated using numerical examples. | |||
TO cite this article:Huang Shuping . Evaluating Orthogonal Random Variables in Non-Gaussian Karhunen-Loeve Expansion[OL].[19 April 2006] http://en.paper.edu.cn/en_releasepaper/content/6315 |
5. Study on Transverse Kinetic Energy Loss in a Channel with Complex Cross Section | |||
Cao Shuyou,Yang Kejun,Liu Xingnian | |||
Mechanics 29 October 2004 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:n a compound channel, the intense momentum transfer on the vertical interface between main channel and flood plain, makes its conveyance capacity decrease. For steady, uniform and turbulent flow, two new concepts, transverse kinetic energy correction coefficient (TKECC) and kinetic energy loss rate (KELR), are put forward in the paper. By the analysis of mechanics of transverse kinetic energy loss, the expression of transverse kinetic energy loss is obtained. According to the mechanics analysis, the two new concepts can reflect the transverse kinetic energy loss intensity in a channel with complex cross section. In the meanwhile, a conclusion is drawn that TKECC is larger than 1 and KELR is larger than 0 in compound channels. By analyzing a large number of experimental data from Science and Engineering Research Council Flood Channel Facility (SERC-FCF), it is found that TKECC and KELR are both related to shapes of cross section and relative depth (Dr). For a given relative depth, kine | |||
TO cite this article:Cao Shuyou,Yang Kejun,Liu Xingnian. Study on Transverse Kinetic Energy Loss in a Channel with Complex Cross Section[OL].[29 October 2004] http://en.paper.edu.cn/en_releasepaper/content/1183 |
6. Research on Flow Patterns and Channel Processes in a Channel with Complex Cross Section | |||
Cao Shuyou,Yang Kejun,Liu Xingnian | |||
Mechanics 28 October 2004 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:he distribution of velocity is one of basic issues in river dynamics. Based on the experimental data measured by ADV in the flume of State Key Laboratory of Hydraulics (SKLH), this paper analyzed the vertical distribution of point velocity and the varying law of turbulence intensity for movable bed in an asymmetric compound channel. Above certain relative height, the streamwise point velocity follows the logarithmic distribution. Under the location, the velocity varies linearly approximately. For all discharges in experiments, the streamwise, lateral and vertical turbulence intensities bear the similarity. They increase with flow depth increasing. After they reach the maximum values, they decrease as flow depth increase. In the meantime, the bed configuration is measured for four discharges, respectively. During the course of width adjustment, the main channel deposits and its side slope and flood plain erode when clean water is supplied. By the analysis of the bed in stabilization, i | |||
TO cite this article:Cao Shuyou,Yang Kejun,Liu Xingnian. Research on Flow Patterns and Channel Processes in a Channel with Complex Cross Section [OL].[28 October 2004] http://en.paper.edu.cn/en_releasepaper/content/1175 |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
Results per page: |
About Sciencepaper Online | Privacy Policy | Terms & Conditions | Contact Us
© 2003-2012 Sciencepaper Online. unless otherwise stated