Changle Sun, Shihao Ge, Yong Nie, Mingzhi Liu, Xiaoxing Zhang
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引用次数: 0
Abstract
Inflatable beam can be regarded as thin-walled beam structure with uniform pressure on the inner wall. In the bending behavior of inflatable beams, there is a noticeable shear effect, causing the cross-section to deviate from the beam's axis. By defining a local coordinate system, the shear effect can be described more accurately. However, the stiffness of the inflatable beam is inconstant under the varying inner pressure. And the inner pressure changes the geometric parameters of the inflatable beam through expansion, thereby changing its section characteristics, and ultimately affecting the expression of the shear effect. Therefore, the application scope of the results obtained by using fixed material parameters is limited. On the basis of previous studies, a revised bending model of inflatable beam considering the shear effect in varying inner pressure is proposed by establishing the relationship between internal pressure, dynamic stiffness and shear effect. The three-point central concentrated load bending experiment of a simply supported beam is then investigated. The computed outcomes of the model are juxtaposed with the results derived from three-dimensional finite element analysis and empirical experimentation, revealing a significant concordance. The model's reliability was further confirmed through comparisons with established models.
期刊介绍：
It is the objective of this journal to provide an effective medium for the dissemination of recent advances and original works in mechanics and materials'' engineering and their impact on the design process in an integrated, highly focused and coherent format. The goal is to enable mechanical, aeronautical, civil, automotive, biomedical, chemical and nuclear engineers, researchers and scientists to keep abreast of recent developments and exchange ideas on a number of topics relating to the use of mechanics and materials in design.
Analytical synopsis of contents:
The following non-exhaustive list is considered to be within the scope of the International Journal of Mechanics and Materials in Design:
Intelligent Design:
Nano-engineering and Nano-science in Design;
Smart Materials and Adaptive Structures in Design;
Mechanism(s) Design;
Design against Failure;
Design for Manufacturing;
Design of Ultralight Structures;
Design for a Clean Environment;
Impact and Crashworthiness;
Microelectronic Packaging Systems.
Advanced Materials in Design:
Newly Engineered Materials;
Smart Materials and Adaptive Structures;
Micromechanical Modelling of Composites;
Damage Characterisation of Advanced/Traditional Materials;
Alternative Use of Traditional Materials in Design;
Functionally Graded Materials;
Failure Analysis: Fatigue and Fracture;
Multiscale Modelling Concepts and Methodology;
Interfaces, interfacial properties and characterisation.
Design Analysis and Optimisation:
Shape and Topology Optimisation;
Structural Optimisation;
Optimisation Algorithms in Design;
Nonlinear Mechanics in Design;
Novel Numerical Tools in Design;
Geometric Modelling and CAD Tools in Design;
FEM, BEM and Hybrid Methods;
Integrated Computer Aided Design;
Computational Failure Analysis;
Coupled Thermo-Electro-Mechanical Designs.
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