BTM Component
The software BTM Component enables the advanced and practical seismic analysis (static cyclic and monotonic) of RC walls and other components (beams, and columns), of rectangular or barbell shape section, using the beamtruss model (BTM) in the finite element program FEMultiPhys. The capabilities of the BTM Component include the efficient modeling (preprocessing), analysis conduct, postprocessing, and nonlinear behavior determination including identification of various critical failure modes, Figure 1, of RC components. The main capabilities of the program are:
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Fast modeling of RC components of rectangular and barbell sections. Each section definition consists of three distinct regions: two boundary elements and the interior web (Figure 2)

Nonlinear static (cyclic and monotonic) analysis for inplane loading controlled at a single elevation

Automatic definition and calibration of advanced material models for reinforcing steel and concrete (confined and unconfined)(Figures 3 and 4)

Efficient modeling of bar buckling and rupture at the material level (Figure 3)

Unconfined and confined concrete material modeling including softening and biaxial effects (Figure 4)

Fullyautomated mesh generator accounting for the angle of inclination of the diagonal compression field of concrete (Figure 5)

Explicit modeling of nonlinear flexureshearinteraction: coupling the inelastic behavior of reinforcing steel in the longitudinal and transverse directions with the biaxial effects and softening of the diagonal compression field of concrete.

Capturing various critical damage and failure modes for inplane behavior such as: bar buckling and rupture, diagonal tension and compression, horizontal and vertical crushing of the web and boundary elements. (Figure 1)

Userfriendly postprocessing and extraction of FD and stressstrain responses of all elements and fibers (Figures 6 and 7)

Oneclick summary of response including strain contours and failure modes identification (Figure 8)

Oneclick report summary of the seismic performance of the component including mechanical properties, hysteretic behavior, forcedisplacement responses, strain responses, and failure mode identification. (Figures 9 and 10)
Enables the Fast Modeling, Advanced Seismic Analysis, and Failure Mode Identification of RC Components in a Userfriendly Interface