EDITORIAL

1. A new beginning for Acta Mechanica Sinica

INVITED REVIEW

1. Rarefied gas effect in hypersonic shear flows

RAPID COMMUNICATION

1. Noise reduction for temperature-sensitive paint measurement contaminated by strong background radiation in a high enthalpy hypersonic tunnel

X-MECHANICS

1. Thinning air-water films stabilized by bacterial particles
2. Machine learning models for the secondary Bjerknes force between two insonated bubbles

EXTREME MECHANICS

1. Experimental study on the origin of lobe-cleft structures in a sand storm

FLUID MECHANICS

1. Assessment of the potential storm tide inundation hazard under climate change：case studies of Southeast China coast
2. Wall shear-stress extraction by an optical flow algorithm with a sub-grid formulation

SOLID MECHANICS

1. Multi-catenary isogeometric discretization with the sliding constraint
2. A numerical implementation of the length-scale independent phase field method

DYNAMICS，VIBRATION，AND CONTROL

1. Optimal design of 6-DOF vibration isolation platform based on transfer matrix method for multibody systems
2. Rotation-based finite elements：reference-configuration geometry and motion description

BIOMECHANICS

1. A computational model for capturing the distinct in-and out-of-plane response of lipid membranes
2. A theory of mechanobiological sensation：strain amplification/attenuation of coated liquid inclusion with surface tension

DISTINGUISHED YOUNG SCHOLARS

1. Flowfield of a helicopter submerged inlet with power output shaft

1. A SHORT BIOGRAPHY
2. Graphical Abstract

NEWS AND VIEWS

1. How does the rarefaction of the air affect hypersonic vehicles