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  • Users: soil1999
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  1. soil1999

    Interaction (Shell to Solid)

    Hi I am modeling pipe buried in soil. The pipe is modeled by shell while the soil is modelled by solid element. I want to describe interaction (surface to surface : frictional) between them and my question is: -is this interaction possible in abaqus - I got the following message which I...
  2. soil1999

    Monte Carlo Simulation Via @Risk Excel Add-in

    Hello I am running simple Monte Carlo Simulations via @Risk using the data below , but I don"t know why I am getting abnormal output results. Input A (Normal Dis): SD= 0.000243 mean = 0.00081 Input B (Normal Dis): SD= 0.03 mean = 0.2 Output = 0.000000615*(Power(0.0000361966 +...
  3. soil1999

    ANOVA and Normally distributed random variables

    Please see attachment showing normal plot of the subject variable (water table depth below ground surface)) with mean of 1 m, min = 0 m, max= 2.5 m and assumed COV = 0.3 (which is reasonable given some literature associated with this variable. Any notes on this is welcome...
  4. soil1999

    ANOVA and Normally distributed random variables

    I don't know if it is crazy to try various standard deviations and specify the given minimum and maximum by truncating the normally distributed function till fitting the mean, min, and max I have . I check if i can do that with the software I have:@Risk By the way does using uniform...
  5. soil1999

    ANOVA and Normally distributed random variables

    "Now, how are you going to fit a symmetric distribution like a normal curve to your assymetric limits? how many standard deviations is that" Well that is really the question of the day for me. I have reviewed quite a lot of materials on this. (As I said this is a hypothetical case and this...
  6. soil1999

    ANOVA and Normally distributed random variables

    Grag, You did not seem to understand my first email (No data is there , what one can do). Well I am going to model it as normally distributed variable in the absence of data. ( this is a hypothetical case anyway). Thank you for your polite answering manner. Eng-Tips.com Forum Policies...
  7. soil1999

    ANOVA and Normally distributed random variables

    Thx Greg -Actually the variable is natural variable. Also the values given are the mean (the most likely value of this variable based on some annual observation) and the minimum and maximum values that are physically possible for this variable. but my question is , theoretically can a normal...
  8. soil1999

    ANOVA and Normally distributed random variables

    Thx Greg -Actually the variable is natural variable. Also the values given are the mean (the most likely value of this variable based on some annual observation) and the minimum and maximum values that are physically possible for this variable. but my question is , theoretically can a normal...
  9. soil1999

    ANOVA and Normally distributed random variables

    Hello, I am carrying out two-ways ANOVA analysis on different random variables and I need your comments please to make sure that I am (being not statistician or probability guy) not doing an error 1- Should these random variables be normally distributed in order for ANOVA analysis and the...
  10. soil1999

    MSE stability due to slope failure and reinfocement length

    Hello Mr salman85, it seems that your issue is already resolved. But if you are familiar with TXDOT, it has great examples on this.
  11. soil1999

    Subgrade modulus of soil

    Since K changes with the pressure (nonlinear trend), the point is to select the value corresponding to the applied pressure. This is simplified analysis that represents the soil foundation under the raft with appropriate design value. Now like any problem you can always go to more detalied...
  12. soil1999

    Stress distribution

    All Thanks for your reply. Basically rigid pavement books provide the bending moments, stresses, and shear at different locations in the slab itself. What I am interested in is the Vertical stress distribution in the soil under a concrete square or strip raft loaded with distributed square...
  13. soil1999

    Formulas for calculating stressunder concrete slab resting on elastic or viscous subgrade/soil

    Can any one guide me to analytical formulas calculating vertical stress distribution in soil underlined by a conceret slab over which a surface load (like traffic loading) is applied. Or formulas to calculate vertical stress in soil under a conceret rigid pavement slab. (Elastic slab resting on...
  14. soil1999

    Stress distribution

    Can any one guide me to analytical formulas calculating vertical stress distribution in soil underlined by a conceret slab over which a surface load (like traffic) is applied. Or formulas to calculate vertical stress in soil under a rigid pavement slab Thanks
  15. soil1999

    Defining Young modulus as function of meas stress (pressure)

    Hello all, My materials is nonlinear elastic with a modulus of elasticity given as function of the mean stress or pressure ( given in table or equation format) . How can I define the modulus of elasticity function in this case..? Do I really need to use USDFLD. I appreciate it if you can detail...
  16. soil1999

    Elastic modulus change with strain rate

    KenFong1 Did you solve this problem. Thanks
  17. soil1999

    Rubber Fabric modelling

    -Can Abaqus model a fabric sheet in plane strain (2D analysis). What element one should use in this case. I do not think we should use truss since truss can take compression. thanks for help
  18. soil1999

    Backfill materials around pipline in slope with high seepage

    Excavation has been made in big slope with fine grained materials with high groundwater table (seepage)to fix the largte diameter watermain line. Go thing that the slope is highly vegetated and not exposed to mechanical load. Any recommendation on backfill materials around and above the line. I...
  19. soil1999

    Selection of proper parameter for slope analysis

    For excavation, soil is under unloading condition/ extenstion . So the shear strength obtained from CU or UU (triaxial compression) should be somehow lower than (maybe by 10 to 20 %) those obtained from Triaxial extenion that should be performed otherwise to simulate the strength under...
  20. soil1999

    Vibration induced deformation

    Anyone can guide to a reference on Estimating settlement of a dry sandy soil foundation (densification) induced by a driving (by vibration) a nearby (10 m far) pile. Estimating the liquefaction potential of saturated sandy soil as a result of the pile driving/ Can the Peak.Particle.Velocity...

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