What are the best software options for dynamic analysis of structures subjected to vibrations?

Based on my experience, I would recommend a combination use of OpenSees and SAP2000 for dynamic analysis of structures. SAP2000 offers user-friendly dynamic analysis with modal, response spectrum, and time history analyses, featuring extensive material libraries and advanced modeling options like cable elements. OpenSees, an open-source framework, specializes in seismic and geotechnical analysis with advanced constitutive models, parallel processing, and strong community support, particularly suited for earthquake engineering research and specialized dynamic analyses.

The best software options for dynamic analysis of structures subjected to vibrations include ANSYS, SAP2000, ABAQUS, STAAD.Pro, and LS-DYNA.

Dynamic analysis is an important aspect of structural engineering as it allows us study the behaviour of structures under loadings that are not static. Response of structures to dynamic loadings is important for study and adequate provisions are made to cater this response. Most importantly, a software that should be chosen for dynamic analysis must be able to generate static loads and as well capable of design approaches such as lateral force, nonlinear static (pushover analysis), linear dynamic (modal analysis) and nonlinear dynamic analyses. Also, if you're to embark on resilient building design it is important to get codified software that can simulate ground motions using appropriate methods.

I would prefer a codified software when it comes to producing engineering deliverables. STAADPro is great tool for modal analysis. Also, the Bentley team is always ensuring regular improvement on their product. For instance, the Master slave assignment has been improved upon with the new features in Connect Edition for STAADPro which allows for direct assignment of diaphragmatic behavior to floors. STAADPro allows autogeneration of generate seismic loadings based on major design codes for seismic designs. This offers great flexibility in design.

Dynamic vibration analysis poses significant challenges, necessitating careful software selection. While Abaqus and ANSYS Mechanical are considered top choices due to their flexibility in modeling complex scenarios, they are often criticized for their intricate interfaces and modeling processes. On the other hand, SAP2000 offers a more user-friendly experience but sacrifices accuracy with its linear modeling approach. Choosing the right software depends on the project's objectives and level of detail required; for research or critical structures, FEM-based software like Abaqus or ANSYS Mechanical is preferable, while SAP2000 is more suitable for rapid decision-making or commercial applications

User friendly interface is important for every design software! A user friendly interface reduces confusion, enhances usability and traceability whenever there is a need to make changes or adjustments. I believe that a software with user interface styled in a manner similar to design work flow or process would be better received by professionals. For dynamic analysis, static demands are typically first evaluated before dynamic demand on the structure. A software interface arranged in this manner, I strongly believe, would endear alot of structural engineers.

Visualisation tool in a software is important! Animation tool are also very useful. Models are developed and subject to dynamic loadings to observe its structural response. It is good to be able to review the response of the structure under various modes of dynamic loadings. This could provide you with the necessary clue on adjustment to be made in order to achieve a more resilient structure. Adjustment like redistribution of columns, reduction of storey height to mitigate against soft storeys, reducing eccentric between the center of mass and center of rigidity of the structure, enhance the structure at floor levels for an improved diaphragmatic behavior.