Mechanical behavior of the CFRP lattice core sandwich bolted splice joints

Zhu, Shengxin; Shao, Guojian; Wang, Yana; Zhu, Xiaolei; Zhao, Qi

doi:10.1016/j.compositesb.2016.03.036

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…Lessard and Shokrieh 26 used Hashin failure criteria to predict matrix failure, fiber-matrix shearing, and fiber failure modes. Zhu et al 27 used 2-D Hashin failure criteria with a linear damage evolution law to predict progressive failure of the composite lattice. Zhou et al 28 used Hashin failure criterion 25 to indicate the damage initiation in the material composite in a progressive damage model on a plain weave 2-D composite unit cell with periodic boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical determination of critical osmotic blister size affecting the strength of aged FRP seawater pipe

Abd-Elhady

Meroufel²,

Sallam

et al. 2020

Polymers and Polymer Composites

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Glass fiber-reinforced polymer (GFRP) composite pipelines are used by many industries for fluids transport including seawater for cooling. The durability of these pipes can be affected where the loss of their strength is due to the occurrence of several internal irreversible micro-damages. One of the challenges facing the integrity of these pipelines is the presence of surface defects. The present research aims to determine the critical size of osmotic blister affecting a 30- year-old seawater handling GFRP pipe. Osmotic blisters were simulated through surface notches with two different geometries and sizes. Longitudinal pipe mechanical strength was studied through tensile tests to study the effect of the surface notch size. At a certain surface notch depth, the strength of the pipe wall decreased with increasing the notch surface depth. This represents the critical value of the damage size called maximum undamaged defect size and noted d max. Damage with size below d max does not affect the strength of the pipe wall. To simulate the progressive failure of this aged composite, a 3-D finite element model was employed based on Hashin’s failure criteria.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical determination of critical osmotic blister size affecting the strength of aged FRP seawater pipe

Abd-Elhady

Meroufel²,

Sallam

et al. 2020

Polymers and Polymer Composites

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“…The motion state may change from periodic to quasi-periodic state due to small difference about the sensitive parameter [6] . The resonant noise response caused by the non-servo frequency band excitation which comes from strong structural nonlinearity of photoelectric measurement affects the tracking stability and accuracy of the optical system [7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Nonlinear Vibration Response of Bolt Fixed Cantilever Beam under Harmonic Excitation

Yu¹,

Wang²,

Song³

et al. 2016

Proceedings of 2016 International Conference on Modeling, Simulation and Optimization Technologies and Applications (MSOTA2016)

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Abstract-The local nonlinearity introduced by the bolt assembly are one of the major reasons for the complex dynamics response characteristics of the photoelectric measurement and control equipment. The single-bolt fixed cantilever beam model is adopted to analyze the super harmonic nonlinear response of structure induced by the local nonlinearity in bolt joint connection structure which is widely used in mechanical structures. The implicit dynamic simulation method is utilized to analyze the phase trajectory curve. The amplitude of superharmonic response is more important than the amplitude of forced excitation under excitation frequency of 1/2 times the resonance frequency. The system exhibits quasi-periodic motion and resonance frequencies exists harmonic components under forced excitation of specific frequency load.

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