Numerical modelling and nanoindentation experiment to study the brazed residual stresses in an X-type lattice truss sandwich structure

► Residual stresses in X-type lattice truss sandwich structure are studied. ► As applied load increases, residual stresses decrease first then keep unchanged. ► As the face sheet thickness increasing, the residual stresses are increased. ► With truss thickness and length increase, residual stresses decrease then increase.