CAE (Comprehensive Analytic Engineering ) , Inc.
CAE SETS (Structure Engineering Turnkey System): True #1

TRUE NO. 1 in STRUCTURE ENGINEERING
MORE GRAPHS
DISCOVERY IN NON-LINEAR THEORY
TENSION-ONLY APPLICATION
  • The Hyper STRUDL(USP) was and is based on a theoretical discovery/break-through in FINITE ELEMENT THEORY.
  • It was and is unpublished but the Program was completed.
  • 1) A slender steel is strong in tension while it will bend without breaking in compression .
  • 2) A new concept in economic design is to use two cables in cross(CROSS-CABLE) as ELEMents ONE-way in Tension rather than one slanted bar.
  • 2-1) Since a slanted bar has to be beefed up for buckling compression while a CROSS-CABLE is sufficient by itself.
  • 2-2) Thus such new design becomes economical.
  • 3) Further, there are structures that are non-linear by themselves. They are suspension bridge, guyed tower, cable dome and so on.
  • 3-1) Hyper STRUDL can handle them all easily and simply. It treats them all as ELEment ONE-way T in input in MODEL.DAT.
  • 3-2) An Engineer can judge whether it is a geometric non-linearity with:
  • 3-2-1) small displacement, NO FURTHER INPUT NEEDED.
  • 3-2-2) big displacement, you input ONE LINE, say; BIGD 20 (Big Displacemnet with 20-cycle limit) in input in LOAD.DAT.
  • 4) Further, Hyper STRUDL gives ONE CYCLE INPUT-OUTPUT to finish a run under various loading combinations, Say; 1.4DL + 1.7LL+1.33WL with a lot of load cases (say; 60) whether the structure is linear or non-linear.
    • One of Hyper STRUDL's Powerful Capabilities

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    DISCOVERY IN NON-LINEAR THEORY
    COMPRESSION-ONLY APPLICATION
  • A sky scraper with foundation supported by piles has been difficult problems for engineers.
  • The Hyper STRUDL(USP) was and is based on a theoretical discovery/break-through in FINITE ELEMENT THEORY.
  • It was and is unpublished but the Program was completed.
  • A SKY SCRAPER UNDER WIND and/or SEISMIC LATERAL LOADS:
  • 1) Piles can be modeled with different elastic moduli (for different resisting strengths) based on compression or tension.
  • 2) Generally speaking, piles under compression, moduli of elasticity can be full strength.
  • 3) Under tension, they are to be weaker. (See instruction on MAT.DAT for Non-linear material Property input.)
  • ALL SOIL UNDER FOUNDATION MAT CAN RESIST THE LATERAL LOADS:
  • 4) A matrix of discrete ONE-way elements, which are Compression-only can be modeled in addition to the pile elements.
  • 4-1) All soil elements can resist lateral loads under compression while under tension; zero.
  • 4-2) The Soil Confined Modulus of Elasticity rather than simple MoE must be used in MAT.DAT(material property data).
  • 4-3) The pile and soil elements may create in MODEL.DAT a geometric space interference. However its effect is negligible.
  • 4-4) Thus geometric layout for the matrix of discrete soil elements can be greatly regularized.

  • One of Hyper STRUDL's Powerful Capabilities.
  • ELEMent ONE-way to model Compression-only Soil elements to reduce amount of pile requirement.

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    Model technique for Soil Conditions with various properties at different depths belows:

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    Structure - Programming - Vibration - Foundation - Civil

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    This page was last updated on
    September/30/2023