Vibration of Visco-Elastic Parallelogram Plate with Parabolic Thickness Variation

• 作者: Anuj Kumar Arun Kumar Gupta Yogesh Kumar Gupta
• 来源期刊: 应用数学(英文)
• 学科: 数学
• 关键词: VIBRATION PARALLELOGRAM PLATE VISCO-ELASTIC Mechanics PARABOLIC Thickness ASPECT Ratio
• 年，卷（期）: yysxyw,（2）
• 页码范围: 128-136
• 页数: 9页
• 分类号: O1

摘要

The main objective of the present investigation is to study the vibration of visco-elastic parallelogram plate whose thickness varies parabolically. It is assumed that the plate is clamped on all the four edges and that the thickness varies parabolically in one direction i.e. along length of the plate. Rayleigh-Ritz technique has been used to determine the frequency equation. A two terms deflection function has been used as a solution. For visco-elastic, the basic elastic and viscous elements are combined. We have taken Kelvin model for visco-elasticity that is the combination of the elastic and viscous elements in parallel. Here the elastic element means the spring and the viscous element means the dashpot. The assumption of small deflection and linear visco-elastic properties of “Kelvin” type are taken. We have calculated time period and deflection at various points for different values of skew angles, aspect ratio and taper constant, for the first two modes of vibration. Results are supported by tables. Alloy “Duralumin” is considered for all the material constants used in numerical calculations