A new interface fracture test was developed for ceramic environmental barrier coatings (EBCs) on matrix composites (CMCs). The proposed modifies an existing in order to simplify specimen preparation. An asymmetric double cantilever beam (ADCB) with a stiffener adhering the coating used, and wedge inserted into notch open it. formula calculate toughness using opening load displacement derived; i...

The structure optimization design under thermo-mechanical coupling is a difficult problem in the topology field. An adaptive growth algorithm has become more effective approach for structural optimization. This paper proposed method by an stiffener layout of box type load-bearing components coupling. Based on stiffness diffusion theory, both load matrix and heat conduction are spread at same ti...

This research presents the modeling and analysis for the buckling and postbuckling behavior of sandwich plates under thermal and mechanical loads. The lay-up configurations of plates are laminated composite with concentric stiffener and surface mounted piezoelectric actuators. The plates are in contact with a three-parameter elastic foundation including softening and/or hardening nonlinearity. ...

This article considers the seismic behavior of beam-to-column joints in steel frames for different bolt arrangements by using of finite element modeling. As the most important beam-to-column joint type, the beam-to-column joints with end-plate is chosen for the analysis. Four different specimens have been analyzed. These models had some differences such as bolt arrangement and the presence or a...

Stiffened plates are widely used in aerospace structures as load-bearing components. In order to obtain a novel design of stiffened with excellent performance, generative method (GDMSP) based on the homogenization is proposed this paper, which optimizes stiffener layout an equivalent model. Then, detailed model can then be obtained by extracting path from discrete distribution angles. Moreover,...

In this paper, the system response, stress redistribution, failure mode, and catenary effect of steel frames with circular tube columns cast stiffener (CSS) joints under a sudden column removal scenario were revealed. Based on force transfer mechanism analysis, practical computationally efficient component-based model considering effects CSS joint details series springs was established validate...

Free vibration behavior of laminated composite plates stiffened by different lattice structures is considered. To simulate free vibration, finite element models were created with Ansys Parametric Design Language (APDL). In the models, SHELL181 and BEAM181 elements used to model structures, respectively. The influence stiffeners on natural frequencies plate examined for clamped-free-clamped-free...

In a previous study, high-damping printed circuit board (PCB) implemented by multilayered viscoelastic acrylic tapes was investigated to increase the fatigue life of solder joints electronic packages vibration attenuation in random environment. However, main drawback this concept is its inability mount parts on PCB surface area occupied interlaminated layers. For efficient spatial accommodation...