1. Joint research

On the premise of maintaining the independent development of the core module of ship CAE, as an open platform, make full use of the enterprise's experience in product engineering and marketization and the basic advantages of universities and research institutes in science, talent, test platform, etc., organize joint research around the key technologies of ship CAE, and at the same time directly purchase some development library modules that are technically difficult or just develop workload, On the basis of cooperation in completing the project, we will further build a good development ecology and promote the rapid and healthy development of ship CAE software. The key technology projects to be jointly tackled or outsourced in the near and medium term include:

1) Development of grid partition function library

Requirement overview: It is planned to develop or introduce the grid generation function library, develop the finite element and boundary element grid generation functions supported by SAM software, and develop geometrically linked grid generation based on this, realize the integration of CAD and CAE, form the source program, executable program (DLL) and relevant technical documents of the overall integration grid generation function library, and obtain the commercial use license and module upgrade services

Preliminary quotation: 650000-800000 yuan.

2) Extension of finite element material constitutive model library

Demand overview: the existing materials in the finite element core solution module are linear elastic and isotropic plastic metal materials. According to the needs of each sub module and future expansion needs, it is necessary to support other commonly used material constitutive models. In Phase I, it is planned to realize 12 constitutive models, including rubber type hyperelasticity, viscoelasticity, porous medium elasticity, anisotropic hardening metal plasticity, creep metal plasticity, follow-up hardening metal plasticity, Johnson Book model Mixed hardening metal plasticity, cast iron, extended Drucker Prager model, modified Drucker Prager/Cap model, critical state model (modified Cambridge model), and finally form the code subprogram and algorithm description document of the model library.

Preliminary quotation: 600000 yuan.

3) Safety evaluation and optimization design of complex structures

Demand overview: In view of the comprehensiveness, experience, fuzziness, multi-objective and creativity of ship structure optimization, it is proposed to cooperate with external units in the field of real ship application technology and approximate model optimization of hierarchical optimization methods such as topology optimization, shape optimization and size optimization in the process of ship structure optimization, including topology optimization method of continuum, boundary element analysis and processing method of shape optimization, and multi-objective collaborative optimization method, It is required to provide the main theories of optimization methods and the technical reports and papers on the solution process, as well as the source code for topology optimization, shape optimization based on boundary elements, and collaborative optimization. The core modules in the program should have good scalability. It is recommended that the code be written in C language, and the source code interpretation and consulting services should be provided.

Preliminary quotation: 690000 yuan.

4) Coupling analysis technique of strong shock wave and structure in multi medium fluid

Demand overview: In view of the strong nonlinear effects such as transient, strong impact and large deformation in the process of underwater near-field explosion, it is planned to cooperate with external units on some key technologies in the numerical simulation process, namely the transient fluid solid interaction algorithm. It includes NS equation solving model, IBM fluid structure coupling calculation model and structural dynamics calculation model. Among them, the fluid calculation module has the ability to capture strong shock waves with high accuracy, the multiphase flow interface is captured by level set methods, and the structure module has the ability to analyze elastic-plastic properties. Fluid structure coupling calculation model needs to be simple, efficient, practical and mature, and can provide technical solutions for coupling analysis of strong shock wave and structure in multi-media fluid. It is required to provide technical documents, materials, papers, etc. necessary for software development, Lagrangian solution module, Euler solution module, Euler Lagrangian fluid structure coupling solution module, numerical testing and examples, code source program, etc., and provide necessary training and communication.

Preliminary quotation: 750000 yuan.

5) Efficient solution techniques for large-scale matrices

Requirement overview: CAE simulation ultimately relies on the solution technology of large-scale sparse matrix, and its solution efficiency largely determines the efficiency/speed of CAE calculation. The calculation efficiency of general solution algorithm is relatively low, so most commercial CAE software develop efficient matrix solution technology according to the characteristics of solver. The source code, executable program (DLL) and relevant technical documents of the matrix solver shall be provided.

Preliminary quotation: 600000 yuan.

6) High Performance Parallel Computing Technology of CAE Based on Heterogeneous Systems

Requirements overview: Heterogeneous systems have become the main form of supercomputer hardware architecture due to their advantages in power consumption and performance. The domestic Shenwei supercomputer is a typical heterogeneous system. Heterogeneous multicore architecture has greatly improved the computing power of supercomputers, but it is also a challenge to CAE high-performance computing. In order to make full use of computing resources, it is necessary to reconstruct and optimize the numerical algorithm, data structure, computing process and other aspects. The source code, executable program (DLL) and relevant technical documents of parallel computing technology shall be provided.

Preliminary quotation: 600,000 yuan.

Contact person for joint research application: Yao Yu 15852704534

2. Promotion and application

From the perspective of the development history of foreign CAE analysis software, the development of software is always guided by industrial demand. Only by timely grasping the latest demand in the industrial field through market-oriented means, continuously absorbing advanced scientific and technological achievements, continuously optimizing and improving the software function and performance, and forming a closed loop can ensure the vigorous vitality of the software. The technical version of ship CAE software is relatively mature. It is urgent to improve the software step by step through the repeated use, error correction and feedback of a large number of users in the market. To this end, we have established the following promotion measures and incentive clauses:

2.1 Engineering case verification

Form:

For practical engineering problems, use ship CAE software for trial calculation, use back-to-back black box test, verify the calculation results, use problems and user operations of ship CAE, truly reflect the use problems and conditions of ship CAE, put forward constructive suggestions for improvement, and prepare corresponding calculation reports.

Evaluation:

a. The complexity of the model and the rationality of simplification, 30%;

b. Whether it has practical engineering significance, 30%;

c. Rationality and accuracy of calculation results, 30%;

d. Details of report preparation, 10%

Proposed funds:

For each verification case, a one-time reward of 50000 to 100000 yuan will be given according to the score of 60-80 points, and a one-time reward of 100000 to 150000 yuan will be given if the score exceeds 80 points.

2.2 Open classes in well-known universities in the industry

Form:

According to the maturity of software research and development, we will negotiate with well-known universities in the industry to open elective/compulsory courses of software application, give feedback in a timely manner according to the use, learning and verification of teachers and students, and provide teaching evaluation reports.

Evaluation:

a. Number of teaching hours. 30%；

b. Maturity of teaching cases, 30%;

c. Students' learning situation, 30%;

d. The level of detail of the evaluation report is 10%.

Proposed funds:

A one-time reward of 200000 to 300000 yuan will be given for each semester based on the score of 60-80 points, and a one-time reward of 300000 to 400000 yuan will be given for each semester based on the score of more than 80 points, with the priority to use the latest version of software.

At the same time, we encourage the third party to carry out secondary development of the software. The property right of the secondary development results of the software belongs to the secondary developer, and the results can be declared separately.

SAM software use training

Summary of SAM software research

SAM Cooperative R&D and Application User Conference