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| Title: | Thermomechanical wrinkling in composite sandwich structures |
| Author (s): | Birman, Victor |
| Department/Lab Affiliations: | Center for Infrastructure Engineering Studies Engineering Education Center at St. Louis |
| Keywords: | facings sandwich structures wrinkling |
| Issue Date: | 2004 |
| Publisher: | American Institute of Aeronautics and Astronautics AIAA |
| Citation: | Birman, Victor “Thermomechanical Wrinkling in Composite Sandwich Structures”, AIAA Journal, vol. 42, no.7, 2004, pp. 1474-1479. |
| Abstract: | A new approach to the solution of the problem of wrinkling in sandwich structures subject to a combination of compressive stresses and uniform elevated temperature is presented. The solution is based on the assumption that both facings wrinkle simultaneously, that is, wrinkling of one of the facings triggers wrinkling of the opposite facing. This approach eliminates shortcomings of several previously developed models where the effect of wrinkling on the opposite facing was disregarded. The solution for the stresses in the core is obtained based on the theory of elasticity. Subsequently, the combination of wrinkling loads, including thermal contributions, is determined either by the energy method or from the equations of equilibrium of the facings. It is shown that in the particular case of a thick and compliant core, the present method yields the results that are almost identical to the well-known Plantema solution. As follows from the numerical analysis, the wrinkling stress increases with the facing-to-core thickness ratio. Elevated temperature results in a decrease of the applied mechanical stress corresponding to wrinkling. In the representative examples, this decrease was almost proportional to temperature. |
| Type: | Article - Journal text |
| In Title: | AIAA Journal |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. Pre-print: archiving status unclear; Post-print: author cannot archive; FULL COPYRIGHT INFORMATION: |
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| title | Thermomechanical wrinkling in composite sandwich structures |
| contributor.author | Birman, Victor |
| contributor.deptlab | Center for Infrastructure Engineering Studies |
| contributor.deptlab | Engineering Education Center at St. Louis |
| subject | facings |
| subject | sandwich structures |
| subject | wrinkling |
| date.issued | 2004 |
| publisher | American Institute of Aeronautics and Astronautics AIAA |
| identifier.citation | Birman, Victor “Thermomechanical Wrinkling in Composite Sandwich Structures”, AIAA Journal, vol. 42, no.7, 2004, pp. 1474-1479. |
| identifier.pub.URI | |
| description.abstract | A new approach to the solution of the problem of wrinkling in sandwich structures subject to a combination of compressive stresses and uniform elevated temperature is presented. The solution is based on the assumption that both facings wrinkle simultaneously, that is, wrinkling of one of the facings triggers wrinkling of the opposite facing. This approach eliminates shortcomings of several previously developed models where the effect of wrinkling on the opposite facing was disregarded. The solution for the stresses in the core is obtained based on the theory of elasticity. Subsequently, the combination of wrinkling loads, including thermal contributions, is determined either by the energy method or from the equations of equilibrium of the facings. It is shown that in the particular case of a thick and compliant core, the present method yields the results that are almost identical to the well-known Plantema solution. As follows from the numerical analysis, the wrinkling stress increases with the facing-to-core thickness ratio. Elevated temperature results in a decrease of the applied mechanical stress corresponding to wrinkling. In the representative examples, this decrease was almost proportional to temperature. |
| type | Article - Journal |
| type.DCMIType | text |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | Pre-print: archiving status unclear; Post-print: author cannot archive; |
| rights.URI | |
| relation.isPartOf | AIAA Journal |
| date.available | 2008-09-29T15:11:30Z |
| identifier.persist.URI |