Computer Design System of Face Gears : Stress Analysis of Tooth Subject to Distributed Load

An analytical elastic-plastic stress analysis is carried out on metal-matrix composite beams of arbitrary orientation, supported from two ends under a transverse uniformly distributed load. The composite layer consists of stainless steel fiber and aluminum matrix. The material is assumed to be perfectly plastic during the elastic–plastic solution. The intensity of the uniform force is chosen at a small value; therefore, the normal stress component is neglected in the elastic-plastic solution. The expansion of the plastic region and plastic stress component of σxare determined for orientation angles of 0, 30, 45, 60 and 90o. Plastic yielding occurs for 0 o and 90 o orientation angles on the lower and upper surfaces of the beam at the same distances from the mid-point. However, it starts first at the lower surface for 30, 45 and 60 o orientation angles.

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Study on Variant Design and Improving Technology of Complex Mechanical Products Based on Knowledge Reuse

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.136.216 ◽

2010 ◽

Vol 136 ◽

pp. 216-220

Author(s):

W.D. Jin ◽

H. Guo

Keyword(s):

Process Model ◽

Design System ◽

Design Knowledge ◽

Effective Management ◽

Knowledge Reuse ◽

Computer Design ◽

Variant Design ◽

Mechanical Products ◽

Design Knowledge Reuse

Reuse of design knowledge may play an important role during the variant design and improvement of complex mechanical products. In the paper, a design knowledge reuse model and a knowledge-reuse-based process model with helical evolution were proposed. Effective management and timely updating technology of design knowledge was also analyzed and explored, and a knowledge-reuse-based computer design system was developed. Moreover, taking a slipform paver as an example, variant design and improving steps of complex mechanical products was intrduced.

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Failure Investigation of the Disc Harrow Profiles and Redesigning by CATIA Analysis

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.729.181 ◽

2015 ◽

Vol 729 ◽

pp. 181-186 ◽

Cited By ~ 1

Author(s):

Gürkan Irsel ◽

Tahir Altinbalik ◽

Yilmaz Can

Keyword(s):

Stress Analysis ◽

Agricultural Sector ◽

Design System ◽

Structural Stress ◽

System Construction ◽

Engineering Analysis ◽

Finite Element Stress Analysis ◽

Failure Investigation ◽

Applied Study ◽

Present Design

This article covers an applied study on the computer-aided engineering analysis of the damage occurring in the disc bearing profiles of a disc harrow used in the agricultural sector and redesigning the existing structure.The damage to the machine had occurred in the form of deformation of the plastic structure in the disk-bearing profiles. In order to examine the damage, to collect information on the stress values causing the damage and to re-arrange the damaged design, system construction was modeled with CATIA and structural stress analysis was performed. Results of finite element stress analysis revealed weak regions of the construction under the variable dynamic loading, and the strength with inadequate and improper distribution was determined. Design goals aiming to improve present design were defined in order to prevent the occurrence of damage, and a design meeting these objectives was obtained. The existing system profiles and links were re-arranged in accordance with this design. Then, an experimental analysis consisting of 250 hours of operation was also performed with these new arrangements. No damage occurrence was observed in the new design, so the validity of the design was confirmed.

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