Topic
Timoshenko beam theory
About: Timoshenko beam theory is a research topic. Over the lifetime, 9426 publications have been published within this topic receiving 200570 citations.
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TL;DR: In this article, a combined analytical, numerical and experimental investigation examined the conditions to fracture the 7.62mm, armor-piercing APM2 projectile core, and demonstrated that the erosion strain of the jacket is a critical parameter for successful simulations.
55 citations
TL;DR: In this paper, the divergence and flutter instabilities of the thin-walled spinning pipes reinforced by singlewalled carbon nanotubes in thermal environment are investigated, where the material properties of carbon nanotein-reinforced composites are assumed to be uniform distribution as well as two types of functionally graded distribution patterns.
Abstract: The divergence and flutter instabilities of the thin-walled spinning pipes reinforced by single-walled carbon nanotubes in thermal environment are investigated. The material properties of carbon nanotube-reinforced composites are assumed to be uniform distribution as well as two types of functionally graded distribution patterns. The thermal effects are also considered and the material properties of carbon nanotube-reinforced composites are assumed to be temperature-dependent. The cantilever pipe conveying fluid is spinning along its longitudinal axis and subjected to an axial force at the free end. Based on the thin-walled Timoshenko beam theory, the governing equations of motion are derived using the extended Hamilton's principle and discretized via the Galerkin method. The resulting thermal-structural-fluid eigenvalue problem is solved and the frequency and the critical fluid velocities are calculated. The effects of carbon nanotubes distributions, volume fraction of carbon nanotubes, compressive axial force, spinning speed, gravity and fluid mass ratio on the critical divergence and flutter velocities of the thin-walled spinning pipe conveying fluid are studied.
55 citations
TL;DR: In this article, a model reduction approach for the vibration analysis of hydraulic pipeline with long distance and multi-supports with elasticity popularly used in aircraft is presented, in which the artificial springs are imported to simulate the arbitrary boundary conditions.
55 citations
TL;DR: In this article, a series of modified sinusoidal corrugated (MSC) sandwich panels, with multiple layers and gradient design, are developed and fabricated by additive manufacturing, and an analytical model for quasi-static compression performance was established by using Timoshenko beam and plastic hinge theory.
55 citations
TL;DR: In this article, the authors investigated Lamb wave propagation in a beam under lead zirconate titanate actuation/sensing, in which the lead ZIRCONATE titanate effects are included.
Abstract: Lead zirconate titanate actuators and sensors have been the widely used in Lamb wave–based damage detection applications. The excitation frequency, waveform, and wave propagation characteristics should be comprehensively considered to effectively conduct diagnosis of incipient forms of damage. In this article, we investigate Lamb wave propagation in a beam under lead zirconate titanate actuation/sensing, in which the lead zirconate titanate effects are included. First, mathematical models are developed to account for both unimorph (i.e. sensor mode) and bimorph (i.e. actuator mode) configurations. The Timoshenko beam theory is adopted for both base beam and lead zirconate titanate layers to accommodate high-frequency responses. Second, the fully coupled electromechanical governing equations are determined and solved in an analytical form to formulate the spectral finite element model. Finally, parametric studies are carried out to determine the optimal actuation frequency, sensor size, actuator, and senso...
55 citations