The software has built the overall architecture of the platform, formed a software overall architecture of 1 platform (software integration platform)+1 core (finite element solution core)+4 directions (environmental load, structural safety, vibration noise, explosion impact)+N applications, opened up the technical path of finite element core solution, and the structural linear and static analysis capabilities are basically consistent with those of common similar commercial software.
3. Software functions
3.1 Finite element solution
It includes static analysis, modal analysis, steady state analysis, transient analysis, contact analysis and other common structural finite element analysis functions. Through unified data interface, it supports the evaluation and coupling of various disciplines of offshore structure analysis, which can achieve:
1. Overall process based on incremental iteration method and open object-oriented architecture design
2. Various basic libraries for structural analysis are available, and user-defined cell, material and other extensions are supported
3. The precision is equivalent to the commercial structure CAE software
Display diagram of finite element modal analysis results
3.2 Environmental Load Assessment
Based on the water wave model of complex wave environment, three-dimensional hydroelasticity theory, mooring dynamics, generalized Wangner method, discrete element method and other theories, the following can be realized:
1. Complex environment forecast
2. Wave load prediction
3. Dynamic analysis of mooring system
4. Slamming wave analysis
5. Ice load analysis
Display diagram of environmental load assessment
3.3 Structural safety assessment
Based on the ideal structural element method, cumulative damage method, elastic large deflection theory of orthotropic plates, genetic algorithm, logical fuzzy model and other theories, the following can be achieved:
1. Ultimate strength analysis
2. Fatigue strength analysis
3. Buckling strength analysis
4. Risk analysis
5. Optimized design
Structural safety assessment display diagram
3.4 Vibration and noise assessment
Based on the theory of three-dimensional acoustic elasticity, statistical energy method, dynamic stiffness method, power flow method and energy finite element method, the following can be achieved:
1. Structural noise analysis
2. Effectiveness analysis of vibration isolation system
3. Cabin noise analysis
4. Underwater noise analysis
5. Acoustic target intensity analysis
Display Diagram of Vibration and Noise Assessment
3.5 Evaluation of explosion shock
Based on underwater explosion theory, second-order dual asymptotic method, dense modal analysis method, structural dynamics and other theories, the following can be achieved:
1. Prediction of underwater explosion load
2. Impact environment prediction
3. Impact resistance evaluation of equipment
4. Damage effect analysis of near-field explosion
5. Collision and grounding analysis
Explosion impact assessment display diagram
4. Software features
Autonomy: fully independent intellectual property rights such as finite element core solver, pre-processing and post-processing, evaluation subsystem, and a full set of program source code;
High precision: a large number of experimental data calibrate the simulation parameters, and synchronize the physical test verification and analysis results;
Specialization: including the common specifications for offshore structure verification and the experience of a large number of industry experts;
Comprehensiveness: including environmental load, vibration and noise, structural safety, explosion impact and other professional directions, basically covering the common analysis requirements of offshore structures;
Openness: It has upstream and downstream software interfaces and supports user-defined material, unit, rule and other functional extensions;
Reliability: developed according to GJB5000A product development model and maintained by professional software team for a long time;
5. R&D history
SAM Software R&D History
SAM software V1.0
✔ The overall software architecture of "1 platform+1 core+4 direction+N application" has been basically built, which is ready for trial;
✔ The primary functions of the finite element solution core of the autonomous structure are basically realized;
✔ All of the four major professional subsystems are capable of solving problems;
✔ The linear and static analysis capability of the structure is basically consistent with Abaqus;
SAM software V2.0
✔ Geometric nonlinear and material nonlinear analysis functions have been added preliminarily, with 5 major analysis functions of structural analysis;
✔ Basic function points such as material, element, load and boundary are further expanded, including 100+expandable simulation function points;
✔ The computing efficiency is greatly improved, the computing time is reduced to 1/3, and the memory consumption is reduced by 50%;
✔ The accuracy of structural linearity and material nonlinearity has no error with Abaqus;
SAM software V3.0
✔ The independent modeling function of typical ships and marine engineering equipment is preliminarily realized;
✔ Further improve the post-processing function;
✔ Further improve the finite element library and material library;
✔ Increase the accuracy of Nastran benchmarking;
✔ Continue to enrich SAM software professional evaluation modules;
✔ Promote the application of tailored GJB5000A in SAM software development;
6. Typical Applications
Large bulk carrier
Dual module scientific research platform
Very large floating bodies in the ocean
Large ships / Large container ship
Software Introduction