/DAMP

Engineキーワード Starter /DAMPオプションを使って定義された質量および剛性のレイリー減衰係数を修正するために使用されます。

フォーマット1(短い形式)

/DAMP/damp_ID

α β

フォーマット2(完全な形式)

/DAMP/damp_ID

α x    β x α y    β y α z   βz α xx    β xx α yy    β yy α zz    β zz MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcea qabeaajaaOcqaHXoqykmaaBaaaleaacaWG4baabeaakiaabccacaqG GaGaeqOSdi2aaSbaaSqaaiaadIhaaeqaaaGcbaqcaaQaeqySdeMcda WgaaWcbaGaamyEaaqabaGccaqGGaGaaeiiaiabek7aInaaBaaaleaa caWG5baabeaaaOqaaKaaGkabeg7aHPWaaSbaaSqaaiaadQhaaeqaaO GaaeiiaiaabccacqaHYoGycaWG6baabaqcaaQaeqySdeMcdaWgaaWc baGaamiEaiaadIhaaeqaaOGaaeiiaiaabccacqaHYoGydaWgaaWcba GaamiEaiaadIhaaeqaaaGcbaqcaaQaeqySdeMcdaWgaaWcbaGaamyE aiaadMhaaeqaaOGaaeiiaiaabccacqaHYoGydaWgaaWcbaGaamyEai aadMhaaeqaaaGcbaqcaaQaeqySdeMcdaWgaaWcbaGaamOEaiaadQha aeqaaOGaaeiiaiaabccacqaHYoGydaWgaaWcbaGaamOEaiaadQhaae qaaaaaaa@6C28@

定義

フィールド 内容 SI単位の例
damp_ID Radioss Starterの減衰オプションの識別子(/DAMP  
α 全ての自由度に使用される質量減衰係数。 [ 1 s ]
β 全ての自由度に使用される剛性減衰係数。 [ s ]
α x MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba qcaaQaeqySdeMcdaWgaaWcbaGaamiEaaqabaaaaa@3C1E@ x方向の並進自由度(DOF)のための質量減衰係数。 [ 1 s ]
α y MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba qcaaQaeqySdeMcdaWgaaWcbaGaamiEaaqabaaaaa@3C1E@ y方向の並進自由度のための質量減衰係数。 [ 1 s ]
α z MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba qcaaQaeqySdeMcdaWgaaWcbaGaamiEaaqabaaaaa@3C1E@ z方向の並進自由度のための質量減衰係数。 [ 1 s ]
α xx MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba qcaaQaeqySdeMcdaWgaaqcbaAaaiaadIhacaWG4baabeaaaaa@3DBA@ xx方向の回転自由度のための質量減衰係数。 [ 1 s ]
α y y MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba qcaaQaeqySdeMcdaWgaaqcbaAaaiaadIhacaWG4baabeaaaaa@3DBA@ yy方向の回転自由度のための質量減衰係数。 [ 1 s ]
α z z MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba qcaaQaeqySdeMcdaWgaaqcbaAaaiaadIhacaWG4baabeaaaaa@3DBA@ zz方向の回転自由度のための質量減衰係数。 [ 1 s ]
β x MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaeqOSdi2aaSbaaSqaaiaadIhaaeqaaaaa@3B6D@ x方向の並進自由度のための剛性減衰係数。 [ s ]
β y MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaeqOSdi2aaSbaaSqaaiaadIhaaeqaaaaa@3B6D@ y方向の並進自由度のための剛性減衰係数。 [ s ]
β z MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaeqOSdi2aaSbaaSqaaiaadIhaaeqaaaaa@3B6D@ z方向の並進自由度のための剛性減衰係数。 [ s ]
β xx MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaeqOSdi2aaSbaaKqaGgaacaWG4bGaamiEaaqabaaaaa@3D09@ xx方向の回転自由度のための剛性減衰係数。 [ s ]
β y y MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaeqOSdi2aaSbaaKqaGgaacaWG4bGaamiEaaqabaaaaa@3D09@ yy方向の回転自由度のための剛性減衰係数。 [ s ]
β z z MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbwvMCKf MBHbqefqvATv2CG4uz3bIuV1wyUbqedmvETj2BSbqefm0B1jxALjhi ov2DaebbnrfifHhDYfgasaacH8akY=wiVeYth9vqqj=hEeuD0lXdbb a9frFj0=irFfea0lXdd9vqai=hGuQ8kuc9pgc9q8qqaq=dir=f0=yq aiVgFr0xfr=xfr=xb9adbaGaaiGadiWaamaaceGaaqaacaqbaaGcba GaeqOSdi2aaSbaaKqaGgaacaWG4bGaamiEaaqabaaaaa@3D09@ zz方向の回転自由度のためのStiffness減衰係数。 [ s ]

コメント

  1. レイリーα減衰の計算式:(1)
    C = α M + β K MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaC4qaiabg2 da9iabeg7aHjaah2eacqGHRaWkcqaHYoGycaWHlbaaaa@3D95@
    (2)
    C i = α m i + β k i MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaam4qamaaBa aaleaacaWGPbaabeaakiabg2da9iabeg7aHjaad2gadaWgaaWcbaGa amyAaaqabaGccqGHRaWkcqaHYoGycaWGRbWaaSbaaSqaaiaadMgaae qaaaaa@412A@
    (3)
    C crit = 4 m i k i
    (4)
    C i C crit = α 2 ω i + β ω i 2
    ここで、
    C MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaC4qaaaa@36C3@
    減衰マトリックス
    M MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaC4qaaaa@36C3@
    質量マトリックス
    K MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaC4qaaaa@36C3@
    剛性マトリックス
    α および β
    係数
    C i MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaam4qamaaBa aaleaacaWGPbaabeaaaaa@37D8@
    節点減衰マトリックス
    m i MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaam4qamaaBa aaleaacaWGPbaabeaaaaa@37D8@
    節点質量マトリックス
    k i MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaam4qamaaBa aaleaacaWGPbaabeaaaaa@37D8@
    節点剛性マトリックス
    C c r i t MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaam4qamaaBa aaleaacaWGJbGaamOCaiaadMgacaWG0baabeaaaaa@3AB0@
    臨界減衰
  2. このオプションは、減衰カード(/DAMP)がRunname_0000.radファイル内で定義されている場合にのみ使用できます。
  3. 任意の係数αとβは Runname_0000.radファイルで宣言し、Radioss EngineファイルRunname_run#.radで同じオプションを繰り返す際に変更できます。