一次元非線型弾性物質中を伝ぱする波の変形

概要

論文の詳細を見る
The distortion of wave-form is investigated theoretically for the case, where the wave propagates in one-dimensional non-linear elastic materials. The constitutive equation is given by a non-linear stress-strain relation. The geometrical acoustics is applied and the wave displacement is assumed to be a product of amplitude and wave-form. The amplitude is assumed to vary gradually while wave-form is a function of eikonal which may vary rapidly. The pre-state is assumed to be homogeneous and static. From order-estimation it is possible to obtain the propagation velocity and the evolutional equation of the amplitude. The distortion of wave-form is found to depend on the first- and second-order derivatives of stress-strain relation. The wave-form may be flatten or sharpen.
社団法人日本材料学会の論文
1980-12-15