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地盤災害システム論 前田研究室 maedalab Assignment01

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Assignment 01

目的: 下 よう 典型的 偏微分方程式を差分法 解くこ 方程式 意味を理解す 特

波動方程式 地震 問題 取 扱う

内容: 二つ タイプ 方程式 表さ 現象を差分法 解き さい 初期条件やパラメータ

設定 各自 適当 設定す こ

) パラメータ

2

物理的意味 つい 調べ 値を変化させ 解くこ を

薦 ます 双曲型 波動方程式

伝播速度を意味します

) 時間 変化す 様子uを図化し,方程式 物理的意味を観察す こ

Purpose: the purpose is to comprehend physical meanings of the following typical partial differential

equations by solving them with finite difference method. We will deal the hyperbolic type equation

especially when we solve the earthquake and vibrations of ground and structure.

Subjects: Solve two following partial differential equations by difference method. Set initial condition and

parameters by youself.

) Investigate the physical meanings of parameter

and/or

2. Analyze solution with different

. For example,

indicates the propagation velocity of wave.

) Show time history of variable u and observe the time history of physical quantities.

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放物形(parabolic type):

2 2 2

x

u

t

u

,

u

u

 

x

,

t

拡散方程式(diffusion equation)

双曲形(hyperbolic type):

2 2 2 2 2

x

u

t

u

,

u

u

 

x

,

t

参照

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