Abstract
Purpose of this paper is to improve parameters of metal structures elements of hoisting-and-transport machines (HTMs) by means of systematic approach to study changes of their stress-strain state during design or usage stage. Subject of the study is pattern of changes in distribution and values of stresses in elements of metal structures of HTMs depending on the structural and parametric characteristics. Design methodology of metal structures of HTMs on the basis of a portal crane is proposed, it is based on strength calculations using methods of allowable stresses and FEM, 3D computer simulation, system analysis of the stress-strain state and structural-parametric synthesis. Results of modeling of loading state and calculations of the portal crane metal structures on strength by FEM in CAD/CAE system, analysis of their stress-strain state, structural-parametric synthesis are presented. Recommendations on practical application of the results are given. Possible ways of further development of proposed solutions are identified.
Highlights
One of priority ways of science and technique development is energy efficiency and environmental management
As a result of the stress-strain state modeling equivalent stress distribution diagrams, threeplane normal stress diagrams, safety factor distribution diagram, loading flow direction diagram, equivalent stress distribution diagram using ‘ISO restriction’ tool constraint for two loading options were obtained in the model [13]
For more visual display of the most stressed sections of the metal structure a diagram is constructed using ‘ISO restriction’ tool which makes it possible not to display sections stresses of which are less than the set value. 113MPa is accepted as the ultimate stress value
Summary
One of priority ways of science and technique development is energy efficiency and environmental management. It is implemented in CAD/CAE environment that allows to: consider entire metal structure without breaking it into elements; increase accuracy of calculations; obtain real pictures of stress-strain state of whole metal structure; conduct repeated studies using developed model
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