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RHEOLOGY
HUBUNGAN ANTARA GAYA DAN
AKIBATNYA PADA MATERIAL
MATERIAL DAPAT MEMPUNYAI SIFAT :
1.VISKOSITAS/KKENTALAN (SPT MADU)
2.ELASTISITAS /KELENTURAN (SPT BAN)
3.CAMPURAN
SHEAR STRESS,SHEAR STRAIN &
VISKOSITAS
• FOKUSNYA PADA BIDANG MATERIAL
ATAU BIDANG LAPISAN BATUAN
• KECEPATAN SHEAR STRESS DAN
SHEAR STRAIN PADA BIDANG
LAPISAN DUA MATERIAL
• PERBANDINGAN KEDUA MATERIAL
ADALAH VISKOSITAS
SHEAR STRESS T
N = -------------------------------- = -------------
RATE SHEAR STRAIN б
VISKOSITAS DAN SHEAR
STRAIN
• Shear Stress 100 MPa Menghasilkan Shear
Strain 0,1 /my.
SHEAR STRESS T 100 MPa
N = -------------------------------- = ------------- = ------------------
RATE SHEAR STRAIN б 0,1/my
N = 1000 MPa-my
SATUAN gtu & gvu & SATUAN
STANDART
STANDART SATUAN WAKTU ---- detik
satuan gtu (geological time unit)
satuan gvu (geological viscosity unit)
SATUAN WAKTU
gtu = 1014
detik = 3,3 my
1my = 3 X 1013
detik
1th = 3 X 10 107
detik
SATUAN VISKOSITAS
gvu = 1 MPa- gtu
= 1014
MPa-detik
= 1015
bar-detik
= 1020
Pa-detik
= 1021
poise
1 MPa = 10 bar-detik
= 106
Pa-detik
= 107
poise
1 bar-detik = 105
Pa-detik
• Batuan dengan viskositas 30 gvu dalam
shear zone dari shear stress 80 MPa.
Berapa kecepatan shear strain ?
• Kecepatan shear strain adalah stress
dibagi viskositas = 80/30 = 2,67 per gtu
• Total waktu = 3 gtu
total strain = 8
• Batuan dengan viskositas 30 gvu dalam
shear zone dari shear stress 80 MPa.
Berapa kecepatan shear strain ?
• Kecepatan shear strain adalah stress
dibagi viskositas = 80/30 = 2,67 per gtu
• Total waktu = 3 gtu
total strain = 8

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Rheology. kuliah tektonik

  • 1. RHEOLOGY HUBUNGAN ANTARA GAYA DAN AKIBATNYA PADA MATERIAL MATERIAL DAPAT MEMPUNYAI SIFAT : 1.VISKOSITAS/KKENTALAN (SPT MADU) 2.ELASTISITAS /KELENTURAN (SPT BAN) 3.CAMPURAN
  • 2. SHEAR STRESS,SHEAR STRAIN & VISKOSITAS • FOKUSNYA PADA BIDANG MATERIAL ATAU BIDANG LAPISAN BATUAN • KECEPATAN SHEAR STRESS DAN SHEAR STRAIN PADA BIDANG LAPISAN DUA MATERIAL • PERBANDINGAN KEDUA MATERIAL ADALAH VISKOSITAS SHEAR STRESS T N = -------------------------------- = ------------- RATE SHEAR STRAIN б
  • 3. VISKOSITAS DAN SHEAR STRAIN • Shear Stress 100 MPa Menghasilkan Shear Strain 0,1 /my. SHEAR STRESS T 100 MPa N = -------------------------------- = ------------- = ------------------ RATE SHEAR STRAIN б 0,1/my N = 1000 MPa-my
  • 4. SATUAN gtu & gvu & SATUAN STANDART STANDART SATUAN WAKTU ---- detik satuan gtu (geological time unit) satuan gvu (geological viscosity unit) SATUAN WAKTU gtu = 1014 detik = 3,3 my 1my = 3 X 1013 detik 1th = 3 X 10 107 detik
  • 5. SATUAN VISKOSITAS gvu = 1 MPa- gtu = 1014 MPa-detik = 1015 bar-detik = 1020 Pa-detik = 1021 poise 1 MPa = 10 bar-detik = 106 Pa-detik = 107 poise 1 bar-detik = 105 Pa-detik
  • 6. • Batuan dengan viskositas 30 gvu dalam shear zone dari shear stress 80 MPa. Berapa kecepatan shear strain ? • Kecepatan shear strain adalah stress dibagi viskositas = 80/30 = 2,67 per gtu • Total waktu = 3 gtu total strain = 8
  • 7. • Batuan dengan viskositas 30 gvu dalam shear zone dari shear stress 80 MPa. Berapa kecepatan shear strain ? • Kecepatan shear strain adalah stress dibagi viskositas = 80/30 = 2,67 per gtu • Total waktu = 3 gtu total strain = 8