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Defence Technology（防务技术） 2023年第12期30卷 126-140页

作者： Ngoc-Tu Do Quoc-Hoa Pham Faculty of Mechanical Engineering Hanoi University of IndustryHanoiViet Nam Faculty of Engineering and Technology Nguyen Tat Thanh UniversityHo Chi Minh CityViet Nam

This paper uses isogeometric analysis(IGA)based on higher-order shear deformation theory(HSDT)to study the dynamic response of bio-inspired helicoid laminated composite(B-iHLC)plates resting on Pasternak foundation(PF)excited by explosive *** takes advantage of non-uniform rational Bspline(NURBS)basic functions to exactly represent the structure geometry models and the attainment of higher-order approximation *** method also ensures a C1 continuous function in the analysis of transverse shear deformation via ***,IGA eliminates the requirement for correction factors and delivers accurate *** foundation with two stiffness parameters:springer stiffness(k_(1))and shear stiffness(k_(2)).The derivation of the governing equations is based on Hamilton's *** proposed method is validated through numerical examples.A comprehensive analysis of the impact of geometrical parameters,material properties,boundary conditions(BCs),and foundation stiffness on dynamic response of B-i HLC plates is carried out.

关键词： Isogeometric analysis Pasternak foundation Dynamic response laminated composite

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NUMERICAL STUDY ON PROPERTIES OF WEAK INTERLAYER OF laminated composite

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Acta Mechanica Solida Sinica 2010年第3期23卷 231-239页

作者： Yafang Zhang Chun'an Tang Faculty of Civil Engineering Guangzhou University Guangzhou 510006 China Dalian University of Technology Dalian 116024 China

With assumption of material inhomogeneity on meso level, a three-point bending beam model has been adopted to simulate crack propagation in two dimensional laminated composite and to verify the toughening mechanism of energy dissipation and crack deflection along the weak interlayer. Moreover, the effect of strength, elastic modulus and thickness of the weak interlayer on both strength and toughness of the laminated composite have also been investigated in this paper.

关键词： laminated composite inhomogeneity crack process toughening

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Wide audio-frequency driving vibration used in non-destructive testing on laminated composite components

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Wide audio-frequency driving vibration used in non-destructi...

Effect of Material Property of Interply Film on the Delamination in laminated composites

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作者： Yunwen Qin Zhiyong Yue Xinhua Ji Yanping Bai Dept.of Mechanics Tianjin University Tianjin China

＜正＞ In this paper, we present an ESSPI-based method for non-destructive testing of laminated composite using wide audiofrequency driving vibration. This method is simple to operate and has many advantages over othe... 详细信息

关键词： ESSPI wide audio-frequency driving vibration laminated composite NDT

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Communications in Nonlinear Science and Numerical Simulation 1999年第1期4卷 39-42页

作者： Wei FENG and Qian HUANG (Shanghai institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China) Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China

The delamination is one of the main failure modes in laminated composites. In order to suppress and/or delay it, considerable research has been devoted to the reduction of the interlaminar stresses at the interfaces between two different plies. This paper studies the effect of isotropic layers placed at ply interface on the interlaminar behaviour of the angle-ply laminated composites. The results of the experiment and numerical analysis show that the material properties of interply film have strong influence on the interlaminar behaviour of laminated composites. In order to suppress delamination, the material of interply film has to been selected carefully due to the fact that different matrials have different results. Some materials may increase the stress values at the interfaces. Some materials may reduce the stress concertration.

关键词： laminated composite interply film stress concentration

On edge dislocation in a multilayered laminate

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Theoretical & Applied Mechanics Letters 2011年第2期1卷 25-28页

作者： Xu Wang~(a) School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237, China School of Mechanical and Power Engineering East China University of Science and Technology Shanghai 200237 China

We investigate the elastic field induced by an edge dislocation in a multilayered laminated composite composed of(N—2)thin bonded elastic layers sandwiched between two semi-infinite elastic media.A simple closed-form solution is obtained when all the phases have equal shear modulus but different Poisson's ratios,and when the dislocation is located in the upper semi-infinite *** image force acting on the dislocation due to its interaction with the multilayered structure is also derived. Several specific examples are discussed in detail to illustrate the mobility of the edge dislocation. Some interesting behaviors of the dislocation are *** results indicate that it is possible to find at most(N—2)equilibrium positions for the edge dislocation in an N-phase composite structure.

关键词： laminated composite edge dislocation image force equilibrium position

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