Study of the Mechanical Properties of the Composite Scene Rigid Pavement Structure

2014 ◽  
Vol 912-914 ◽  
pp. 329-333
Author(s):  
Da Wei Lv ◽  
Shao Bo Shi ◽  
Xiao Li Sun
Keyword(s):  
Mechanical Properties ◽  
Optimization Design ◽  
Rigid Pavement ◽  
Asphalt Overlay ◽  
Site Monitoring ◽  
Actual Variation ◽  
Cement Concrete Pavement ◽  
Analytical Formulas ◽  
Asphalt Paving ◽  
Pavement Structure

s: Rigid Pavement composite performance is more complex, there is no analytical formulas can better predict its mechanical properties. This article by buried sensors in ShanMei Expressway Cement Asphalt Paving Project, on-site monitoring of the actual variation of the mechanical properties of the composite pavement structure, this study provides a theory basis for the optimization design of highway asphalt overlay structure of Cement Concrete Pavement.

Study on Properties of Plate Performance of Black Substratum Cement Concrete Pavement

2013 ◽  
Vol 834-836 ◽  
pp. 745-748
Author(s):  
Wei Yu ◽  
Xuan Cang Wang ◽  
Jian Jiao Zhou ◽  
Zhi An Feng
Keyword(s):  
Element Model ◽  
Vertical Displacement ◽  
Deformation Energy ◽  
Concrete Pavement ◽  
Base Layer ◽  
Cement Concrete ◽  
Rigid Pavement ◽  
Cement Concrete Pavement ◽  
Pavement Structure ◽  
Structure Layer

In order to improve aderverse state of connection between cement concrete pavement and base layer, the black substratum of asphalt concrete was set between pavement and base layer. According to the elastic mechanics theory, 3d finite element model of pavement structure was established, the vertical displacement of each structure layer was analyzed by using ANSYS. The results show that black substratum can absorb part of deformation energy by using its good deformation ability, so as to improve the stress condition of the entire pavement structure. It can increase the ability of structure layer deformation coordination to set the black substratum, which can make rigid pavement combine the characteristics of rigid pavement and flexible pavement.

scholarly journals Mechanical properties optimization of the steering column based on multi-objective optimization design

2016 ◽  
Vol 8 (12) ◽  
pp. 168781401668294 ◽  
Author(s):  
Si Chen ◽  
Zhaohui Wang ◽  
Mi Lv
Keyword(s):  
Mechanical Properties ◽  
Process Parameters ◽  
Optimization Design ◽  
Strain Difference ◽  
Optimization Method ◽  
Equivalent Strain ◽  
Multi Objective Optimization ◽  
Optimal Process ◽  
Multi Objective ◽  
Initial Results

The mechanical properties of the steering column have a significant influence on the comfort and stability of a vehicle. In order for the mechanical properties to be improved, the rotary swaging process of the steering column is studied in this article. The process parameters, including axial feed rate, hammerhead speed, and hammerhead radial reduction, are systematically analyzed and optimized based on a multi-objective optimization design. The response surface methodology and the genetic algorithm are employed for optimal process parameters to be obtained. The maximum damage value, the maximum forming load, and the equivalent strain difference obtained with the optimal process parameters are, respectively, decreased by 30.09%, 7.44%, and 57.29% compared to the initial results. The comparative results present that the quality of the steering column is improved. The torque experiments and fatigue experiments are conducted with the optimal steering column. The maximum torque is measured to be 260 NM, and the service life is measured to be 2 weeks (40 NM, 2500 times), which are, respectively, increased by 8.3% and 8.69% compared to the initial results. The above results display that the mechanical properties of the steering column are optimized to verify the feasibility of the multi-objective optimization method.

Structural Optimization Design of MR Fluid Clutch

2007 ◽  
Vol 546-549 ◽  
pp. 1673-1676 ◽  
Author(s):  
Wei Jia Meng ◽  
Zhan Wen Huang ◽  
Yan Ju Liu ◽  
Xiao Rong Wu ◽  
Yi Sun
Keyword(s):  
Magnetic Field ◽  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Optimization Design ◽  
Element Analysis ◽  
Mr Fluids ◽  
Magneto Rheological ◽  
Ferromagnetic Fluids ◽  
Ferromagnetic Particles

Magnetorheological (MR) fluids are suspensions of micron sized ferromagnetic particles dispersed in varying proportions of a variety of non-ferromagnetic fluids. MR fluids exhibit rapid, reversible and significant changes in their rheological (mechanical) properties while subjected to an external magnetic field. In this paper, a double-plate magneto-rheological fluid (MRF) clutch with controllable torque output have been designed. Electromagnetic finite element analysis is used to optimize the design of the clutch by using the commercial FEA software ANSYS.

The Structure Optimization Design for the W-Type Metallic Sealing Ring Based on the MOGA Algorithm

2015 ◽  
Vol 727-728 ◽  
pp. 541-545
Author(s):  
Xiang Yu Ding
Keyword(s):  
Mechanical Properties ◽  
Optimal Design ◽  
Optimization Algorithm ◽  
Optimization Design ◽  
Structure Optimization ◽  
Ansys Software ◽  
Sealing Ring ◽  
Structure Optimization Design

This paper uses the ANSYS software to analysis the outer arm opening angel(OAOA) and the outer arm arc angle(OAAA) of W-type metallic sealing ring which can effects on the mechanical properties,obtained in that when the OAOA choose from 1.398°to 14.156 °and the OAAA choose from 30.21° to 59.5 °, the mechanical properties of the sealing ring can satisfy the requirement of use. Then using the MOGA optimization algorithm to optimize the design of W-type metallic sealing ring, and find when the OAOA choose 3.39°and the OAAA choose 32.18°are the optimal design of the W-type metallic sealing ring.

scholarly journals ANÁLISE DAS PROPRIEDADES MECÂNICAS EM CONCRETO PARA PAVIMENTO RÍGIDO COM A INSERÇÃO DE RESÍDUO DE GARRAFÃO DE ÁGUA COMO AGENTE DE REFORÇO DA MATRIZ / ANALYSIS OF MECHANICAL PROPERTIES IN CONCRETE FOR RIGID PAVEMENT WITH WATER BOTTLE WASTE AS A REINFORCEMENT AGENT IN THE MATRIX

2021 ◽  
Vol 7 (2) ◽  
pp. 17090-17110
Author(s):  
Cristiane Araujo dos Santos Silva ◽  
Sabino Alves de Aguiar Neto ◽  
José Victor Brasil de Souza ◽  
Fábio Augusto Silva Machado ◽  
Mateus Antônio Nogueira Oliveira ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Bottle ◽  
Rigid Pavement ◽  
The Matrix

Theoretical prediction of mechanical properties of 3D printed Kagome honeycombs and its experimental evaluation

2019 ◽  
Vol 233 (18) ◽  
pp. 6559-6576 ◽  
Author(s):  
Xuefeng Zhu ◽  
Longkun Xu ◽  
Xiaochen Liu ◽  
Jinting Xu ◽  
Ping Hu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shear Modulus ◽  
Tensile Testing ◽  
Elastic Moduli ◽  
Uniaxial Tensile ◽  
Anisotropy Ratio ◽  
Young’S Moduli ◽  
Analytical Formulas ◽  
3D Printed ◽  
Printed Materials

Kagome honeycomb structure is proved to incorporate excellent mechanical and actuation performances due to its special configuration. However, until now, the mechanical properties of 3D printed Kagome honeycomb have not been investigated. Hence, the objective of this work is to explore some mechanical properties of 3D-printed Kagome honeycomb structures such as elastic properties, buckling, and so on. In this paper, the analytical formulas of some mechanical properties of Kagome honeycombs made of 3D-printed materials are given. Effective elastic moduli such as Young's modulus, shear modulus, and Poisson's ratio of orthotropic Kagome honeycombs under in-plane compression and shear are derived in analytical forms. By these formulas, we investigate the relationship of the elastic moduli, the relative density, and the shape anisotropy–ratio of 3D-printed Kagome honeycomb. By the uniaxial tensile testing, the effective Young's moduli of 3D printed materials in the lateral and longitudinal directions are obtained. Then, by the analytical formulas and the experimental results, we can predict the maximum Young's moduli and the maximum shear modulus of 3D-printed Kagome honeycombs. The isotropic behavior of 3D-printed Kagome honeycombs is investigated. We also derived the equations of the initial yield strength surfaces and the buckling surfaces. We found that the sizes of the buckling surfaces of 3D printed material are smaller than that of isotropic material. The efficiency of the presented analytical formulas is verified through the tensile testing of 3D printed Kagome honeycomb specimens.

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