Mechanics of Solids
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Dynamic Tensile Behavior of Polyamide 6 at Different Strain Rates: Experiments and Constitutive Model
Mechanics of Solids - - 2024
This work studies the tensile behavior of polyamide 6 (PA6) at different strain rates using both experimental and numerical methods. Quasi-static and dynamic tensile tests are performed using a universal testing machine and a split Hopkinson tensile bar (SHTB). The stress-strain curves and specimen morphologies are obtained over a wide range of strain rates from 2.6 × 10–4 s–1 to 900 s–1. The tens...... hiện toàn bộ
Spectral properties of linear gyroscopic systems
Mechanics of Solids - Tập 44 - Trang 165-168 - 2009
We study how the natural frequencies of a linear gyroscopic system behave under variations in the kinetic and potential energy matrices as well as in the gyroscopic force matrix.
A Modal Displacement Unevenness Coefficient Method for Multi-Point Matrix Damage Detection in Composite Laminates
Mechanics of Solids - Tập 58 - Trang 366-380 - 2023
The matrix cracking severely decreases the load-bearing performance of composite laminates even though its smaller degree in comparison with delamination, cut-out, and hole. The initial parameters in modal analysis, such as natural frequency, modal displacement, and modal curvature, can only detect a damage with large changes in geometric shape and elastic modulus. To solve this situation, a new N...... hiện toàn bộ
On the Stability of Steady Rotation of a Satellite around the Normal to the Orbital Plane
Mechanics of Solids - Tập 55 - Trang 947-957 - 2021
We study the rotational motion of a satellite (a rigid body) around the center of mass in a central Newtonian gravitational field in a circular orbit. The stability problem of a steady motion is solved for the case when the symmetry axis of the satellite is perpendicular to the orbital plane, and the satellite itself rotates about the symmetry axis with a constant angular velocity (cylindrical pre...... hiện toàn bộ
Rayleigh-Type Waves in Microstretch Elastic Solid Half-Space Containing Voids
Mechanics of Solids - - 2024
Propagation of Rayleigh-type surface waves is investigated in a microstretch elastic solid half-space containing voids. Dispersion relation is obtained using stress-free surface boundary conditions and found that there exists only one Rayleigh-type surface wave, which is dispersive, attenuating and influenced by the stretch, voids, micropolar properties of the medium. For a specific material, the ...... hiện toàn bộ
Spectral properties of some problems in mechanics of strongly inhomogeneous media
Mechanics of Solids - Tập 44 - Trang 874-906 - 2010
In the present paper, we derive effective dynamic equations and analyze the spectral properties of strongly inhomogeneous media such as elastic porous materials saturated by a fluid and two-fluid mixtures (suspensions).We also study the structure of the natural vibration spectrum of bounded volumes for several effective models and the convergence rate of solutions of the original boundary value pr...... hiện toàn bộ
Rào cản tròn trong môi trường dị hướng: Năng lượng và trường ứng suất đặc trưng Dịch bởi AI
Mechanics of Solids - Tập 56 - Trang 34-39 - 2021
Một phép toán giả vi phân được xây dựng để mô tả trường ứng suất trong môi trường dị hướng do sự dịch chuyển với vector Burgers biến thiên gây ra. Dưới giả định
$${\mathbf{b}} \in {{H}_{{1/2}}}(\Pi ,{{R}^{3}})$$
, các biểu thức phân tích cho năng lượng của các rào cản tròn với vector Bu...... hiện toàn bộ
#rào cản; không đồng nhất; phương pháp giả vi phân; năng lượng ứng suất; môi trường đàn hồi
Modeling of large elastoviscoplastic deformations with thermophysical effects taken into account
Mechanics of Solids - Tập 45 - Trang 583-594 - 2010
We propose a mathematical model of large elastoviscoplastic deformations where intensive deformation results in temperature increasing and heat transfer processes. As an example of applying the model relations, we present a solution of the boundary-value problem on rectilinear motion and heating of a medium located in the gap between coaxial rigid cylindrical surfaces.
Study of possible void nucleation and growth in solids in the framework of the Davis-Nadai deformation theory
Mechanics of Solids - Tập 49 Số 3 - Trang 302-313 - 2014
On the Stability of Equilibrium of a Mechanical System with Tracking, Potential, and Small Dissipative Forces
Mechanics of Solids - Tập 53 - Trang 52-59 - 2019
We consider a holonomic non-conservative mechanical system with two degrees of freedom that simulates the motion of a vane on the elastic bushing of the helicopter’s main or rudder screw in the thrust plane. The system experiences the action of potential, non-conservative positional forces and linear dissipative forces, which describe the effect of internal friction during deformation of the vane ...... hiện toàn bộ
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