Design and Optimization of Rear Wheel Assembly for All-Terrain Vehicle

Author(s):  
M. Anthony Bala Paul Raj ◽  
Raghavendran Pala Raviramachandran ◽  
N. Prakash ◽  
Bh. Chirudeep Reddy ◽  
V. Gopi Krishna

This paper describes the design and optimisation of rear wheel assembly for an all-terrain vehicle. The components of rear wheel assembly are designed with an optimised design intent with light weight material selection. The designed assembly is then discretised using finite element modelling through Hexa-dominant 3D mesh. The upright knuckle and the hub are assessed for their integrity check and the performance of full assembly is verified through simulation. From the post-processed stress results, factor of safety for the designed parts is presented. The presented work can be expanded to optimise the upright and the hub based the resolved gradient stress plots from the finite element analysis.

2013 ◽  
Vol 391 ◽  
pp. 168-171
Author(s):  
Shou Jun Wang ◽  
Li Bo Yang

When it comes to the design of a wave-frame,empirical design is always adopted domestic,which is relatively conservative on stiffness and intensity and prefer a bigger factor of safety,thus these bring many uncertainties to the wave-frame.In order to reduce the negative effect to the wave system,the analysis of the wave-frame based on ANSYS is executed to have a knowledge of the weakness and the deformation of various parts.On the permise of ensuring the stiffness and intensity,with the method of grouping and using different profile steel,the purpose is to reduce the mass snd the negative effect brought by mass,and achieve the goal of optimization.


1992 ◽  
Vol 29 (6) ◽  
pp. 971-988 ◽  
Author(s):  
Z. Chen ◽  
N. R. Morgenstern ◽  
D. H. Chan

The mechanism of progressive failure is well understood as one which involves nonuniform straining of a strain-weakening material. Traditional limit equilibrium analysis cannot be used alone to obtain a rational solution for progressive failure problems because the deformation of the structure must be taken into account in the analysis. The failure of the Carsington Dam during construction in 1984 has been attributed to progressive failure of the underlying yellow clay and the dam core materials. The dam was monitored extensively prior to failure, and an elaborate geotechnical investigation was undertaken after failure. The limit equilibrium analysis indicated that the factors of safety were over 1.4 using peak strength of intact clay material or 1.2 based on reduced strength accounting for preshearing of the yellow clay layer. Factors of safety were found to be less than unity if residual strengths were used. The actual factor of safety at failure was, of course, equal to one. By using the finite element analysis with strain-weakening models, the extent and degree of weakening along the potential slip surface were calculated. The calculated shear strength was then used in the limit equilibrium analysis, and the factor of safety was found to be 1.05, which is very close to the actual value of 1.0. More importantly, the mechanism of failure and the initiation and propagation of the shear zones were captured in the finite element analysis. It was also found that accounting explicitly for pore-water pressure effects using the effective stress approach in the finite element and limit equilibrium analyses provides more realistic simulations of the failure process of the structure than analyses based on total stresses. Key words : progressive failure, strain softening, finite element analysis, dams.


2018 ◽  
Vol 7 (4.13) ◽  
pp. 214-220
Author(s):  
Mohd Nasri Ishak ◽  
Abd Rahim Abu Talib ◽  
Mohammad Yazdi Harmin

Current design of safety syringes requires two handed operation and additional processes which is not similar to the normal syringes. Due to this concern, a new design of safety syringe is introduced in order to produce a safety syringe which allows a single-handed operation and similar to the operation of a normal syringes. This paper presents the material selection process and design analysis of a newly devel-oped multi-purpose disposable safety syringe. Based on the design analysis, the force which needed to dismantle the nozzle is found to be 20 N and this value is practical for the end users. The finite element analysis had also shown that the design concept is safe and has safety feature for the user to use. In addition, copolymer is proven as the best material selection for safety syringe production.


Micromachines ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 780 ◽  
Author(s):  
Myunggi Ji ◽  
Qiang Li ◽  
In Ho Cho ◽  
Jaeyoun Kim

Soft material-based pneumatic microtube actuators are attracting intense interest, since their bending motion is potentially useful for the safe manipulation of delicate biological objects. To increase their utility in biomedicine, researchers have begun to apply shape-engineering to the microtubes to diversify their bending patterns. However, design and analysis of such microtube actuators are challenging in general, due to their continuum natures and small dimensions. In this paper, we establish two methods for rapid design, analysis, and optimization of such complex, shape-engineered microtube actuators that are based on the line-segment model and the multi-segment Euler–Bernoulli’s beam model, respectively, and are less computation-intensive than the more conventional method based on finite element analysis. To validate the models, we first realized multi-segment microtube actuators physically, then compared their experimentally observed motions against those obtained from the models. We obtained good agreements between the three sets of results with their maximum bending-angle errors falling within ±11%. In terms of computational efficiency, our models decreased the simulation time significantly, down to a few seconds, in contrast with the finite element analysis that sometimes can take hours. The models reported in this paper exhibit great potential for rapid and facile design and optimization of shape-engineered soft actuators.


2012 ◽  
Vol 166-169 ◽  
pp. 1157-1163
Author(s):  
Wael Elleithy ◽  
Choon Kiat Lim

In this paper, the ultimate behaviour of bolted connections and the effect of various configurations of bolted connections on the ultimate strength are thoroughly investigated. Through finite element modelling, the stress distributions, bolt load distributions, and the effect of bolt sizes and bolt arrangements are studied in detail. The finite element analysis results show that the square shape arrangement of a bolted connection has a higher ultimate strength than that of the diamond shape arrangement. The ultimate strength of bolted connection increases as the bolts size increase until a limitation of improvement in strength is reached.


2012 ◽  
Vol 184-185 ◽  
pp. 235-238
Author(s):  
Zhi Cheng Huang ◽  
Ze Lun Li

The frame of 4MPa vertical type high-pressure grouting machine is used as the research object. The finite element analysis software ANSYS is applied to the modal finite element analysis of the frame. The first five order natural frequencies and the corresponding vibration modes of the frame are obtained, and then the influence of every mode shape on the performances of the frame was discussed. It provides a reference for the dynamic structural design and optimization of the frame of vertical type high-pressure grouting machine.


2012 ◽  
Vol 150 ◽  
pp. 165-169 ◽  
Author(s):  
Gang Zhang ◽  
Xue Zhang ◽  
De De Jiang ◽  
Ming Yan Li ◽  
Jian Zhang

According to the property of contact problem, the calculation formula of contact stress of cross-roller slewing bearing is derived under the action of eccentric axial load. The finite element model of slewing bearing is analyzed in ANSYS, and then the finite element analysis software is used to analyze the contact stress. In this way, the distribution condition of contact stress between roller and rings is obtained. By comparing the finite element analysis results with theoretical analysis results, the correctness of finite element analysis is certified, which provides a guide for the design and optimization of slewing bearing.


Author(s):  
Bipul Chandra Mondal ◽  
Ashutosh Sutra Dhar

This paper presents a finite element investigation on the strength and deformation characteristics of corroded steel pipes with corrosion on the exterior and interior surfaces of the pipes considering different corrosion parameters such as circumferential extent (width) of corrosion, ratio of corrosion width to pipe diameter and the locations of corrosion. The finite element analysis was performed using a commercially available general purpose finite element program, ABAQUS/Explicit. The study reveals that localized bending develops on the pipe wall within the corroded zone that extent up to a certain distance (1 to 1.5 times the corrosion dimension) in the non-corroded area. The localized bending causes stress concentration in the vicinity of the corroded area that is not well captured in the current design standards (i.e. modified ASME B31G). As a result, the modified ASME B31G method overestimated the pipe capacity comparing to the capacity calculated based on the finite element analysis. A pipe designed using the modified ASME B31G method is expected to provide a factor of safety less than the design factor of safety. The effects of circumferential extent of corrosion appears to be less compared to the effects of longitudinal extent of corrosion. The exterior corrosion was found to be more detrimental in comparison with the interior corrosion.


The paper emphasizes on designing a high performance All-Terrain Vehicle (ATV). We started the designing of 3D model of vehicle using CATIA V5 software. With considering, the critical parameters such as overall weight, safety, high strength, and ergonomics, the roll cage of all-terrain vehicle is designed and then its static analysis is carried out. The Roll cage plays a major role which provides safety to the driver and also it is a main building block of ATV. In this research paper, the roll cage is designed by considering all the constraints provided by SAE (Society of Automotive Engineers). The finite element analysis was done using ANSYS 15.0. Various impacts that the roll cage can undergo are studied. From the optimum design with considering the factor of safety in the account, the roll cage was designed with superior weight to strength ratio. The results obtained after the analysis stated the designed to be safe and sound.


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