نتایج جستجو برای: thermal deformation

تعداد نتایج: 285446  

2014
Haruo Nagai Yoshio Noguchi

Taking the viscosity-temperature relationship of the fluid film into consideration, a 3-D numerical model was established by ANSYS software which can simulate the heat transfer between the upstream pumping mechanical seal stationary and rotational rings and the fluid film between them as well as simulate the thermal deformation, structure deformation and the coupling deformation of them. Accord...

Journal: :international journal of automotive engineering 0
golbakhshi namjoo mohammadi

the dissipated energy from periodic deformation is regarded as the main reason for heat generation and temperature rise inside the tire domain. however, the mechanical behavior of rubber parts is highly temperature dependent. in most performed investigations, the influence of thermal effects on stress/ deformation fields of pneumatic tires is ignored and just temperature distribution is conside...

2002
Shinji Shimizu Noboru Imai

The spindles speed and feed rate of machine tools increase greatly to realize high-productivity with high accuracy. This leads to exceeding increase in heat generation and then the thermal deformation of the machine tools become serious problems. Therefore it makes necessary to measure and evaluate the thermal deformation. With these points as background, measuring methods for thermal deformati...

Journal: :international journal of civil engineering 0
d. p. chen 59#,hudong road, maanshan, china, 243002 c. x. qian 2#,sipailou, nanjing , china, 211189 c. l. liu 59#,hudong road, maanshan, china, 243002

concrete deformation due to temperature and moisture condition will always develop simultaneously and interactively. the environmentally (hygral and thermally) induced stress and deformation are essential to concrete durability. to simulate the deformation of concrete caused by the coupling effect of temperature and moisture, a numerical simulation approach is proposed comprising analytical pro...

2010
Z. Shu L. G. Shen M. J. Li Y. Sun X. C. Wang W. Zhao Y. J. Pei

Thermal deformation caused by Non-uniform temperature distribution in disk-loaded waveguide affects the resonant frequency of LINAC deeply. A new approach of multi-disciplinary integration is adopted to study the influence of the thermal deformation on the resonant frequency. The kernel technology is to simulate the thermal deformation of the accelerator tube loaded RF power via thermal-structu...

Functionally graded materials are commonly used in thermal environment to change the properties of constituent materials. The new numerical procedure of functionally graded skew plates in thermal environment is presented in this study based on the C0-form of the novel third-order shear deformation theory. Without the shear correction factor, this theory is also taking the desirable properties a...

2011
Fumio Nishimura Takuma Shiga Shigeo Maruyama Kazuyuki Watanabe Junichiro Shiomi

Knowledge of thermal conductance of carbon nanotubes under mechanical deformation is important to characterize the robustness of carbon nanotube heat conduction. In this study, using molecular dynamic simulations, we have calculated thermal conductance of an elastically buckled single-walled carbon nanotube. A local buckle was formed by mechanically bending a carbon nanotube at an angle of 60°,...

2016
A. GRABARCZYK

The aim of this article is to test the properties of foundry moulding sands with a new bicomponent organic binder. The new binder is the composition of phenol-furfuryl resin, commonly used in foundry practice and biodegradable material – polycaprolactone. The paper presents the research of strength properties, thermal destruction and thermal deformation of moulding sands with a new bicomponent ...

2017
Kuankuan Chen Cong Li Meng Hu Xun Hou Chunmei Li Zhiqian Chen

Deformation modes were studied for Ti₃AN (A = Al, In and Tl) by applying strain to the materials using first-principle calculations. The states of the bonds changed during the deformation process, and the Ti-N bonds remained structurally stable under deformation. The elastic anisotropy, electronic structures, hardness, and minimum thermal conductivity of anti-perovskite Ti₃AN were investigated ...

Journal: :journal of computational and applied research in mechanial engineering - jcarme 0
m. talebitooti department of mechanical engineering, qom university of technology, qom, 1519-37195, iran m. ghasemi department of mechanical engineering, qom university of technology, qom, 1519-37195, iran s. m. hosseini department of mechanical engineering, qom university of technology, qom, 1519-37195, iran

in the present work, study of the vibration of a functionally graded (fg) cylindrical shell made up of stainless steel, zirconia, and nickel is presented. free vibration analysis is presented for fg cylindrical shells with simply supported-simply supported and clamped–clamped boundary condition based on temperature independent material properties. the equations of motion are derived by hamilton...

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