Fengde Wang

TL;DR: A novel bat algorithm with double mutation operators (TMBA), in which a modified time factor and two mutation operators are integrated, is proposed to enhance BA’s performance on nonlinear optimization problems and statistical results indicate that TMBA is more feasible and effective for solving the low-velocity impact localization problem.

TL;DR: A hybrid support vector regression with multi-domain features is proposed to increase the localization accuracy in determining the locations of low-velocity impacts on the composite plate structure.

TL;DR: A hybrid bat algorithm with double mutation operations (DMBA), in which the Cauchy mutation operator and the extremal optimization mutation operator are integrated into BA, is proposed to enhance BA’s ability to jump out of the local optima.

TL;DR: Based on the Euler-Bernoulli beam theory, an analytical method to determine the response of the jack-up riser subjected to the random wave load was established by the Mindlin-Goodman method in the frequency domain this paper.

TL;DR: In this paper, an experimental and numerical investigation on the vibration characteristics of a drill pipe during the lowering of a subsea Xmas tree was presented, and a fourth-order partial differential equation with variable coefficients was established based on Euler-Bernoulli beam theory.