Experimental Investigation of Friction and Slip at the Traction Interface of Rope and Sheave

2017 ◽  
Vol 85 (1) ◽  
Author(s):  
Xiaolong Ma ◽  
Yalu Pan ◽  
Xi Shi
Keyword(s):  
Finite Element Analysis ◽  
Experimental Investigation ◽  
Finite Element ◽  
Experimental Results ◽  
Loading Conditions ◽  
Middle Region ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
Contact Arc

In this paper, an exclusive testing rig was built to experimentally investigate the friction and slip at elevator traction interface under different traction conditions. The experimental results indicated that slipping occurs at both ends of contact arc first and then expands to the middle region gradually until the full slip along the sheave occurs. In addition, the full slip occurs earlier under lower rope pretension. Meanwhile, by setting similar boundary and loading conditions as in the experiments, the finite element analysis was performed. The simulation results agree with the experiments very well but reveal more details about traction behavior.

Distortion Simulation of Unsymmetrical Composite Laminates Using the Finite Element Analysis Method

2007 ◽  
Vol 546-549 ◽  
pp. 1563-1566
Author(s):  
Min Li ◽  
Bao Yan Zhang ◽  
Xiang Bao Chen
Keyword(s):  
Experimental Data ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Composite Laminates ◽  
Shell Element ◽  
Element Analysis ◽  
Unsymmetric Laminates ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
The Difference

Unsymmetric composite laminates were benefit to reducing the structure weight of some aircrafts. However, the cured unsymmetric laminates showed distortion at room temperature. Therefore, predicting the deformation before using the unsymmetrical composite is very important. In this study an attempt was made to predict the shapes of some unsymmetric cross-ply laminates using the finite element analysis (FEA). The bilinear shell-element was adopted in the process. Then the simulation results were compared with the experimental data. The studies we had performed showed that the theoretical calculation agreed well with the experimental results, the predicted shapes were similar to the real laminates, and the difference between the calculated maximum deflections and the experimental data were less than 5%. Hence the FEA method was suitable for predicting the warpage of unsymmetric laminates. The error analysis showed that the simulation results were very sensitive to the lamina thickness, 2 α and (T.

Finite Element Analysis of the Mechanical Structure in Portable Exoskeleton Based on DOF Coupling

2013 ◽  
Vol 706-708 ◽  
pp. 1140-1145
Author(s):  
Fang Liu ◽  
Wen Ming Cheng ◽  
Yi Zhou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Human Motion ◽  
Analysis Model ◽  
Human Body Model ◽  
Element Analysis ◽  
Standard Format ◽  
Mechanical Structure ◽  
The Finite Element Analysis ◽  
Simulation Results

Since the posture of portable exoskeleton is consistent with human motion and each joint degree of freedom is same, on the basis of DOF coupling in portable exoskeleton, the finite element analysis of the mechanical structure in portable exoskeleton has been calculated. According to the anthropomorphic mechanism design method, the universal joint structure has been used to meet the requirements of degrees of freedom in the mechanical structure of the exoskeleton; using the Hydraulic cylinder to simulate the contraction or stretch of human muscle, and the three-dimensional model of the exoskeleton mechanical systems has been created with the Solidworks software; selecting Human CAD software and setting the parameters of the movement of the human body model, the variations of the various joints can be obtained; using the Parasolid as the standard format for data transfer between the two software Solidworks and ANSYS, the finite element analysis model was established, and according to the principle of coupling, the three translational DOF and two rotating DOF was coupled, besides through both legs vertical standing, one knee kneeling, and one leg vertical standing three conditions, the exoskeleton strength was analyzed. The simulation results show that under the three conditions, a concentrated stress all has been found in the exoskeleton structure, besides the concentrated stresses all have been obtained in the cross-section changing site or the junction of the two components, which stress values exceeded the allowable stress values of the aluminum alloy material, so the suggestions for improvement of the structure are put forward in the article; at the same time, the simulation results provide a numerical basis for the optimization of the portable exoskeleton structure.

The Finite Element Analysis of Waste Fiber Recycled Concrete Column Compression Performance

2015 ◽  
Vol 727-728 ◽  
pp. 269-272
Author(s):  
Jing Hai Zhou ◽  
Qing Zhe Lin ◽  
Yun Cong Shu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Strain Curve ◽  
Recycled Concrete ◽  
Experimental Results ◽  
Concrete Column ◽  
Fiber Volume ◽  
Element Analysis ◽  
Compression Performance ◽  
The Finite Element Analysis

Through the ABAQUS software to simulate the compression performance of waste fiber recycled concrete column of the different fiber length and amount of fiber volume under the monotonic load, the ultimate carrying capacity and load - concrete strain curve of waste fiber recycled concrete eccentric compression column are concluded, and compare them with experimental results. The results show that the finite element analysis results and experimental results are basically in agreement with, which proves the feasibility and correctness of the finite element analysis.

Force Analysis and Optimal Design of Propeller for Garbage Powder Mixer

2011 ◽  
Vol 422 ◽  
pp. 438-442
Author(s):  
Mei Fa Huang ◽  
Wei Zhao Luo ◽  
Guang Qian
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimal Design ◽  
Stress Analysis ◽  
Maximum Stress ◽  
Working Condition ◽  
Force Analysis ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Results

Propeller is one of the critical parts in garbage powder mixer and affect significantly to the performance. In order to obtain a more reasonable structure, force analysis and stress analysis is carrier out for the propeller based on the actual working condition. Optimal design for the propeller is implemented by the results of stress analysis. To verify the rationality and feasibility of this mechanism, the finite element analysis for the propeller is performed by using the ANASYS software. The simulation results show that the maximum stress of the propeller is on the joint of blade and rod. The optimized propeller is satisfied with the strength requirements.

The Finite Element Analysis of Double-cabin Storage Tank in Multiple Loading Conditions

2013 ◽  
Vol 706-708 ◽  
pp. 1627-1630
Author(s):  
Dong Sheng Zhang ◽  
Su Hong Fu ◽  
Jun Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Storage Tank ◽  
Fuel Tank ◽  
Loading Conditions ◽  
Analysis Software ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Multiple Loading ◽  
Tank Design

In this article, the intensity of the double-cabin storage tank and subframe is simulated and calculated by the NASTRAN finite element analysis software under five different loading conditions, it provides a useful reference for similar car fuel tank design.

Modal Analysis of 160KVA Dry-Type Transformer Based on ANSYS

2012 ◽  
Vol 229-231 ◽  
pp. 919-922
Author(s):  
Bao Dong Bai ◽  
Guo Hui Yang ◽  
Bing Yin Qu ◽  
Jian Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Modal Analysis ◽  
Noise Level ◽  
Natural Frequencies ◽  
Analysis Software ◽  
Element Analysis ◽  
The Core ◽  
The Finite Element Analysis ◽  
Simulation Results

In this paper, the modal analysis was carried out on the core and cavity of a 160KVA dry-type transformer based on the finite element analysis software of ANSYS. And the simulation results of the natural frequencies and modal shapes were obtained, which provided a theoretical guidance to the design of the transformer structure, and were meaningful to reduce the vibration and noise level of the transformer.

Pressure Capacity Study of Φ100 Reinforced Thermoplastic Pipe

2019 ◽  
Vol 944 ◽  
pp. 867-872
Author(s):  
Lin Wang ◽  
Yu Ran Fan ◽  
Peng Song
Keyword(s):  
Finite Element Analysis ◽  
Experimental Study ◽  
Finite Element ◽  
Small Deviation ◽  
Experimental Result ◽  
Burst Pressure ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
Structural Layer

The pressure capacity of reinforced thermoplastic pipe was studied by the finite element analysis and experimental study using Φ100 reinforced thermoplastic pipes. The simulation results illustrated that the failure mode of reinforced thermoplastic pipe under internal pressure was the break of glass fiber belt in structural layer. Moreover, the simulated burst pressure fitted well with the experimental result, the small deviation between two results may be resulted from the process defects of RTP.

The Finite Element Analysis of Mechanical Behavior of New Connection

2014 ◽  
Vol 1065-1069 ◽  
pp. 1281-1284
Author(s):  
Chun Gang Wang ◽  
Xu Wang ◽  
Guo Chang Li ◽  
Jin Guo Wu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Behavior ◽  
New Wave ◽  
Calculation Methods ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
Vibration Wave ◽  
Better Than

Purlin connections have important influence on the stiffness, bearing capacity and the purlin calculation methods. A new kind of purlin connection was put forward in this paper. The mechanical behavior of the new connection was studied by finite element analysis using software ANSYS. As can be seen from the simulation results, the new connection can enhance the stiffness of purlin, and effect of each new wave connection is better than the promotion of purlin stiffness in the vibration wave connection. New connection has a better promotion effect for small stiffness of purlin.

Analysis of Strengthening Methods for Retained Exterior Walls during a Structural Retrofit

2010 ◽  
Vol 133-134 ◽  
pp. 929-933
Author(s):  
Yu Ouyang ◽  
Ying Hu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Retaining Walls ◽  
Loading Conditions ◽  
Analysis Software ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Calculation Results ◽  
Story Building

A three-story old building made up of masonry and wood will be retrofitted to be a new 14-story building, retaining two exterior walls and removing all internal members. To prevent the retained walls form deforming severely or collapse during the retrofit is necessary. The finite element analysis software, ANSYS, is used to calculate the responses of the retaining walls under possible loading conditions. The original retrofit proposal for the old building is refined based on the calculation results.

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