This issue contains about 100 papers concerning various impact problems that cover topics not only in mechanical engineering but also civil engineering. examples of such include dynamic deformation and constitutive relations, dynamic failure and fracture, numerical simulations, structural crashworthiness, ballistic response and penetration and new experimental techniques. the papers are grouped as follows: i. plenary and keyword lectures, ii. dynamic deformation and constitutive relations, iii. numerical simulations in civil engineering, iv. dynamic behavior of structures in civil engineering, v. dynamic failure and fracture, vi. ballistic response, vii. penetration, viii. dynamic behavior and application, ix. elastic/plastic wave propagation, x. dynamic biomechanics and sports dynamics, xi.
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