Accurate BEM Elastostatic Analysis for Very Slender Body and Thin Plate

Recently it becomes very important to analyze the bonded structures with thin plates, the dissimilar materials, the adhesive joints, and the laminate plates. But in the usual boundary element elastostatic analysis (DSM) of very slender body and very thin plates, it is known that the unstable and inaccurate solutions are sometimes encountered. In the present paper, we point out the factors of this inaccuracy and provide the strategies for each factor to obtain an accurate solution. From this study, the highly-accurate solutions can be obtained even If the aspect ratio of slender beams and thin plates is in thousands and hundreds.