✦ LIBER ✦

Identification of effective elastic constants of composite plates based on a hybrid genetic algorithm

✍ Scribed by Shun-Fa Hwang; Jen-Chih Wu; Rong-Song He

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 343 KB
Volume: 90
Category: Article
ISSN: 0263-8223
DOI: 10.1016/j.compstruct.2009.03.021

No coin nor oath required. For personal study only.

✦ Synopsis

Vibration testing combined with a numerical method is a potential alternative approach for determining elastic constants of materials. To obtain better results, the numerical method based on a hybrid genetic algorithm is proposed. As verified from available data in the literature, the repeatability and accuracy of the proposed inverse determination method are confirmed, and it also shows that the concept of effective elastic constants is workable. The proposed method is applied successfully to determine the effective elastic constants of a woven composite plate and two PCBs. Moreover, a systematical two-step procedure is proposed to make up the problem of missing natural frequencies or natural frequencies with large errors due to the limitation in the measurement. Hence, the applicability of the present method to identify the effective elastic constants of inhomogeneous composite plates is demonstrated.

📜 SIMILAR VOLUMES

Application of genetic algorithms for th

Application of genetic algorithms for the identification of elastic constants of composite materials from dynamic tests

✍ Jesiel Cunha; Scott Cogan; Christophe Berthod 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 163 KB 👁 1 views

This work has been placed within the framework of the identi"cation of sti!ness properties of composite materials from dynamic tests. More precisely, the used approach has been inserted in the general context of model updating. The genetic algorithms method has been used as a complementary technique

Genetic algorithm reconstruction of orth

Genetic algorithm reconstruction of orthotropic composite plate elastic constants from a single non-symmetric plane ultrasonic velocity data

✍ J. Vishnuvardhan; C.V. Krishnamurthy; Krishnan Balasubramaniam 📂 Article 📅 2007 🏛 Elsevier Science 🌐 English ⚖ 241 KB

Comment on “Hybrid computational strateg

Comment on “Hybrid computational strategy based on ANN and GAPS: Application for identification of a non-linear model of composite material”

✍ W. Sha 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 141 KB

This short communication comments on a series of papers using artificial neural networks published by Guessasma and co-workers in structures journals. The issues discussed include the size of the database for training a neural network, database enlargement for training a neural network, and extrapol

Effect of Silicone Carbide on the Elasti

Effect of Silicone Carbide on the Elastic Properties of Starch-Based Composites: A Three-Phase Model

✍ Said Rjafiallah; Sofiane Guessasma 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 704 KB

## Abstract The effect of a rigid filler on the elastic properties of starch‐based composites is investigated. Thermomolding of the targeted composite is conducted using a starch matrix with varying silicone carbide content. Mechanical testing reveals that the composite's Young modulus cannot be ra