Motives for better Engineering
Explore horizontal earth pressure,
Coulomb's theory, and its applications.
Compare geotechnical results and
understand the trial wedge method's nuances.
Explore the technical content on vessel collision
to calculate the annual frequency of bridge component collapse.
Introducing the concept of seismic isolation design.
See moreCivil Engineering modal analysis asia Earthquake Analysis MDOFSystems Field_Structure Structure Type_Dam Category_Knowledge
One of the first concepts that is being taught in earthquake engineering classes is determination of dynamic properties of structures such as frequency and period. Under the action of earthquakes or external forces, the structure moves, and this movement is heavily influenced by its dynamic properties.
Structural Analysis Reinforced Concrete Structural Design Structural Engineering asia Field_Structure Structure Type_Building Structure Type_Dam Category_Knowledge Design Code_ACI
seismic design Response Spectrum Analysis Seismic Isolation resonance asia Field_Structure Structure Type_Building Structure Type_Dam Category_Knowledge Category_How-to Structure Type_Bridge Structure Type_Underground Structure Type_Industrial
Finite Element Analysis Nonlinear Analysis P-Delta Analysis Field_Structure Structure Type_Building Structure Type_Dam Category_Knowledge Category_How-to Structure Type_Bridge
Dr. Seungwoo Lee has talked about some fundamental differences between linear and nonlinear analysis in structural engineering in the past. In linear analysis, the relationship between the stress and strain of a model is held constant, and the stiffness matrix of the model stays the same throughout the analysis. For a nonlinear analysis, there can be various factors that contribute to its nonlinearities, for example, material yielding, nonlinearities in the boundary conditions, and various forms of geometric nonlinearities. In this article, Dr. Lee will elaborate more on geometric nonlinearities and show how different approaches to approximate geometric nonlinearities can vary the structural analysis results.
Prestressed Concrete Concrete Bridge Construction America Field_Structure Structure Type_Dam Category_Knowledge Category_How-to Structure Type_Bridge
Mainly there are two ways to perform the time-dependent analysis. One is the time-step analysis and the other is the age-adjusted method.
Moment of Inertia America Field_Structure Structure Type_Dam Category_Knowledge Structure Type_Bridge
Sometimes we need tiresome calculations, even though they are not critical nor difficult, but they are essential, and they take time if we do not have proper tools. One of these is the moment of inertia calculation for cracked, circular concrete sections. We need this calculation when we perform service stress checks for flexure and deflection checks.