A MAC based excitation frequency increasing method for structural topology optimization under harmonic excitationsTao Liu, Ji-Hong Zhu, Fei He, Hua Zhao, Qinlin Liu and Chong YangInt. J. Simul. Multisci. Des. Optim., 8 (2017) A4DOI: https://doi.org/10.1051/smdo/2016012