Application of failure criteria on plywood under bending

Merhar, Miran (author)

In composite materials, the use of failure criteria is necessary to determine the failure forces. Various failure criteria are known, from the simplest ones that compare individual stresses with the corresponding strength, to more complex ones that take into account the sign and direction of the stress, as well as mutual interactions of the acting stresses. This study investigates the application of the maximum stress, Tsai-Hill, Tsai-Wu, Puck, Hoffman and Hashin criteria to beech plywood made from a series of plies of differently oriented beech veneers. Specimens were cut from the manufactured boards at various angles and loaded by bending to failure. The mechanical properties of the beech veneer were also determined. The specimens were modelled using the finite element method with a composite modulus and considering the different failure criteria where the failure forces were calculated and compared with the measured values. It was found that the calculated forces based on all failure criteria were lower than those measured experimentally. The forces determined using the maximum stress criterion showed the best agreement between the calculated and measured forces.

• Language: English
• Keywords: max stress, Tsai-Wu, Tsai-Hill, Puck, Hoffman, Hashin, failure criteria, beech, finite element modelling, composites
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2021
• Number of pages: 20 str.
• Numbering: Vol. 13, iss. 24, art. 4449
• PID: 20.500.12556/RUL-134191
• UDC: 630*83
• ISSN on article: 2073-4360
• DOI: 10.3390/polym13244449
• COBISS.SI-ID: 90088451
• Publication date in RUL: 28.12.2021

Record is a part of a journal

• Title: Polymers
• Shortened title: Polymers
• Publisher: MDPI
• ISSN: 2073-4360
• COBISS.SI-ID: 517951257

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 18.12.2021

Secondary language

• Language: Slovenian
• Keywords: maksimalna napetost, Tsai-Wu, Tsai-Hill, Puck, Hoffman, Hashin, porušitveni kriteriji, bukev, metoda končnih elementov, kompoziti

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0182
• Name: Razvojna vrednotenja