Optimal Design and Contact Analysis for Planetary Roller Screw

2011 ◽  
Vol 86 ◽  
pp. 361-364 ◽  
Author(s):  
Shang Jun Ma ◽  
Geng Liu ◽  
Jian Xing Zhou ◽  
Rui Ting Tong
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Stress Distribution ◽  
3D Model ◽  
Structural Parameters ◽  
Contact Analysis ◽  
Contact Deformation ◽  
Roller Screw

Based on the meshing principle of Planetary Roller Screw (PRS), the meshing clearance of screw pair is minimized by taking the half of thread angle, and the pitch diameter tooth thickness, e, as the optimization variables. Optimal structural parameters are obtained by using optimization module of the software Matlab. The 3D model of PRS structures are established with Solidworks and the finite element contact analysis is carried out with Ansys. The contact deformation and stress distribution are calculated among screw, rollers and nut. The results can be used for PRS design.

Study on Axial Contact Deformation of Planetary Roller Screw

2012 ◽  
Vol 155-156 ◽  
pp. 779-783 ◽  
Author(s):  
Xiao Cai Zhang ◽  
Geng Liu ◽  
Shang Jun Ma ◽  
Rui Ting Tong ◽  
Hao Luo
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Calculation Method ◽  
Mathematic Model ◽  
Element Model ◽  
Contact Analysis ◽  
Contact Deformation ◽  
Roller Screw ◽  
Simplified Finite Element Model ◽  
Equivalent Method

Based on the current study of planetary roller screw(PRS), a summary of how to match the main parameters of the PRS is obtained. A mathematic model for contact analysis is developed, where series of equivalent balls are used to replace the rounded profile of the roller. At the same time, the formula of axial contact deformation of the PRS is derived. Then a simplified finite element model of the PRS is established and the contact analysis is conducted by FEA. The FEA results and the theoretical ones agree well with each other, so the accuracy of the calculation method and the validity of the equivalent method are verified.

Optimal Design of Composite Material Maintenance Structure for Aircraft Based on ANSYS Workbench

2021 ◽  
Vol 871 ◽  
pp. 216-221
Author(s):  
Jing Tao Dai ◽  
Pei Zhong Zhao ◽  
Hong Bo Su ◽  
Hao Dong Liu ◽  
Yu Bo Wang ◽  
...  
Keyword(s):  
Finite Element ◽  
Composite Material ◽  
Optimal Design ◽  
Structural Characteristics ◽  
Structural Parameters ◽  
Element Model ◽  
Composite Cement ◽  
Composite Patch ◽  
Length Width ◽  
Ansys Workbench

Composite material is widely used to maintain damaged structures of aircraft. The 3D finite element model of composite cement maintenance for aircraft is established by finite element method software ANSYS Workbench. The structural characteristics and usage status of the composite cement maintenance model is analyzed, and then the optimal structural parameters of the composite patch are obtained, including the length, width and thickness. The results show that the composite cement maintenance method could effectively restore the rigidity, and improve the strength of the structure. Furthermore, the optimal design for composite patch ensures safety of aircraft, economics of maintenance, and operability of repair methods.

Investigation on the uncertain factors of the elastic–plastic contact characteristics of the planetary roller screw mechanism

2018 ◽  
Vol 233 (5) ◽  
pp. 1795-1806
Author(s):  
Qin Yao ◽  
Yongshou Liu ◽  
Mengchuang Zhang ◽  
Geng Liu ◽  
Shangjun Ma
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Mathematic Model ◽  
Contact Analysis ◽  
Secondary Development ◽  
Elastic Plastic ◽  
Development Platform ◽  
Roller Screw ◽  
Screw Mechanism ◽  
Element Method

The scatter of uncertain factors of the planetary roller screw mechanism, which originated from the manufacturing process, has a significant influence on its serving performance. However, this influence remains insufficiently studied. Further, the elastic–plastic contact analysis of the planetary roller screw mechanism with considering the uncertainties needs large numbers of repetitive calculations by traditional finite element method, which is labor intensive and often impractical. In this paper, an uncertain model of the planetary roller screw mechanism, including parameterization and finite element calculation, is established to conduct the elastic–plastic contact analysis automatically. Besides, the finite element method results can be also obtained automatically with the self-compiled flow program and the secondary development platform using the design of experiment method. Then, a mathematic model is applied to value the influence of the uncertain factors on the contact characteristics. The Pareto graphs are plotted to clearly show this sequence of the percent effects of all the uncertain factors. The present work, for the first time, developed an automatic modeling method for analyzing efficiently the uncertain factors of planetary roller screw mechanism, which is worthy in industrial application.

scholarly journals Modal characteristics of harmonic gear transmission flexspline based on orthogonal design method

Open Physics ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 819-827
Author(s):  
Leyu Wei ◽  
Jie Yang ◽  
Changlu Wang ◽  
Xingxing Wang ◽  
Xinmeng Liu
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Natural Frequencies ◽  
Design Method ◽  
Orthogonal Design ◽  
Structural Parameters ◽  
Gear Transmission ◽  
Modal Characteristics ◽  
Orthogonal Design Method ◽  
The Stability

Abstract The flexspline features several modal characteristics that are related to its structural parameters, which could impose an impact on the stability and reliability of the system of harmonic gear transmission. In this article, we have integrated the method of orthogonal design with the approach of finite element, so as to study the modal characteristics of flexspline under varying structural parameters. Furthermore, we have analyzed the ways of how varying structural parameters could impose an impact on the first eight-order natural frequencies of flexspline. In addition, by adopting the method of range and variance analysis for the obtained data, we have examined the influence imposed by varying structural parameters on the modal characteristics of flexspline, which could lay a foundation for the optimal design of the structural parameters of flexspline.

Finite Element Analysis of Accurate Tooth Profile Diesel Engine Gear

2011 ◽  
Vol 121-126 ◽  
pp. 1610-1613
Author(s):  
Da Shu Wang ◽  
Hong Mei Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Diesel Engine ◽  
Stress Distribution ◽  
3D Model ◽  
Accurate Method ◽  
Contact Strength ◽  
Element Analysis ◽  
Nonlinear Contact ◽  
Gear Contact

This paper puts forward the method of establishing the accurate 3D model of involute gear and imports the model to MSC.Patran to mesh the grid. The stress distribution is simulated by applying the MSC.Marc to solve the nonlinear contact problem. It is a quick and accurate method to analyze the gear contact strength.

The Structural Analysis and Rapid Optimization for High-Speed Spindle Box

2011 ◽  
Vol 199-200 ◽  
pp. 1269-1272
Author(s):  
Huai Xing Wen ◽  
Lu Jun
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Analysis ◽  
Optimal Design ◽  
Design Process ◽  
High Speed ◽  
Structural Parameters ◽  
The Finite Element Method ◽  
Target Setting ◽  
Fuzzy Constraints

Through the optimization of the design process, the application of the finite element method and the structural parameters design have avoided blindness of product design, reduced unnecessary waste, waste of material and time for example. The fuzzy constraints has been determined by the sensitivity calculation , and the use numerical method and procedures of chart to analyze and compare, the target setting in the specified range has been searched for the structure. Thus the optimal design got achieved.

Contacting Model Considerations of Interference Fit for Shaft-Hub System

2010 ◽  
Vol 118-120 ◽  
pp. 294-298 ◽  
Author(s):  
Hong Yun Luo ◽  
Chun Jiang Liu ◽  
Kai Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Optimal Design ◽  
Stress Distribution ◽  
Traditional Method ◽  
Model System ◽  
Rotor System ◽  
Fem Model ◽  
Interference Fit ◽  
Contact State

In this study, a contacting model was investigated for interference fit shaft–hub system (rotor system) on rotational speed 30000 r/min by finite element method (FEM) which gives more complete and accurate results than the traditional method. 2-d and 3-d FEM contacting models were established first; then the stress distribution and contact state of rotor system which containing four interference fit couples were analyzed with the contacting FEM model system while the rotor system rotates on 30,000r/min. Finally, an optimal design of shrink range of the rotor system above was debated.

scholarly journals Optimal Design of Cymbal Stack Transducer in a Piezoelectric Linear Actuator by Finite Element Method

2015 ◽  
Vol 2 (3-4) ◽  
pp. 169-176
Author(s):  
Wen Sheng ◽  
Zhang Tiemin ◽  
Zhang Jiantao ◽  
Yang Xiuli
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Optimal Design ◽  
Structural Optimization ◽  
Structural Parameters ◽  
Initial Configuration ◽  
Response Analysis ◽  
Linear Actuator ◽  
Optimization Scheme ◽  
Element Method

Abstract The optimal design of a piezoelectric linear actuator using parametric optimum method-based finite element method (FEM) was presented. First, the FEM model of the cymbal stack transducer was generated with its initial configuration. The structural parameters were chosen as the design variables and the displacement on the top surface of the transducer taken as the objective function. Second, the zero-order optimization method was chosen as the basic tool of the structural updating. The structural optimization scheme of the cymbal stack transducer was carried out based on ANSYS parametric design language (APDL). Finally, an example of dynamic response analysis was performed on the cymbal stack transducer to verify the structural optimization scheme. The results show that the displacement on the top surface is increased by 32.9% compared with the case of initial configuration.

Contact Analysis of HSK Toolholder-Spindle Interface

2012 ◽  
Vol 236-237 ◽  
pp. 422-427
Author(s):  
Xue Mei Liu ◽  
Jian Wei Luo ◽  
Ai Ping Li
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Contact Stress ◽  
Contact Area ◽  
Rotational Speed ◽  
Contact Analysis ◽  
Clamping Force ◽  
High Rotational Speed ◽  
Finite Element Software ◽  
Contact Stress Distribution

This study was undertaken to analytically investigate factors which influence the performance of the HSK toolholder-spindle connection. The change of contact area and the contact stress distribution of HSK-A63 toolholder-spindle interface were analyzed with the finite element software ANSYS. The analysis results showed that the contact area and contact stress are significantly affected by clamping force and spindle speed, and that enough magnitude of interference can offset the gap between spindle and toolholder under high rotational speed and also affect the clamping force assigned to the flange face.

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