2014, Volume 16, Issue 4
Strategic Study of CAE >> 2014, Volume 16, Issue 4
The calculation of maximum bending normal stress for sandwich beam based on revised single beam theory
1.Central South University of Forestry and Technology，Changsha 410004，China；
2. Hunan I.D. Center of Furniture and Furnishing，Changsha 410004，China
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Abstract
Maximum bending normal stress is one of the important parameters to measure flexural property of sandwich beam. Therefore，new methodology to calculate the stress is proposed based on the equivalent single beam theory，after that the numerical examples are demonstrated according to three point flexure test. The results showed that revised single beam theory (RSBT) are equivalent to multi-layer theory (MLT). When cross section of beam and maximum loading are fixed，the maximum bending normal stress calculated by RSBT is increased accordingly with increasing ratio of core thickness to the whole，but the result is constant for single beam theory (SBT). RSBT is set up to provide a new method for sandwich construction application in engineering industry.
Keywords
sandwich beam ; bending normal stress ; single beam theory ; bending property
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