Comment on ‘Static and dynamic analysis of micro beams based on strain gradient elasticity theory’ by S. Kong, S. Zhou, Z. Nie, and K. Wang,(International Journal of Engineering Science, 47, 487-498, 2009)

摘要

This paper comments on the recently published work dealing with the static and dynamic analysis of micro beams by using the strain gradient elasticity theory (International Journal of Engineering Science, 47, 487-498, 2009) by Kong et al. (2009). The authors give the nonzero elements related to deviatoric stretch gradient tensor and higher-order stress. The values of η(1)131, and t(1)131, are taken as zero by Kong et al. (2009). We present the non-zero terms in this comment. Consequently, we presented some results for cantilever beam in order to show the effect of these non-zero terms on the tip deflections of micro-sized beam.