SPbPU: CML-Bench Digital Twin Development Platform

The main articles are:

• CAD Computer-aided design systems
• Digital Twin of Organization (DTO)

2025: Integration with the Logos software package

The digital platform for the development and application of digital twins CML-Bench, developed by Peter the Great St. Petersburg Polytechnic University, integrated the LOGOS engineering analysis program package. Integration will allow expanding the functional application of both products in the domestic software market for mathematical, computer and supercomputer modeling of complex products and physical and mechanical processes. This was announced on June 4, 2025 by the press service of the Advanced Engineering School "Digital Engineering" of St. Petersburg Polytechnic University Peter the Great.

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Фото: cml-bench.ru

According to the company, "LOGOS" - a line of digital products for mathematical modeling and engineering analysis, belongs to the software of the CAE (Computer-Aided Engineering) class. LOGOS was created on the basis of many years of developments of ROSATOM State Corporation, which have been carried out by FSUE RFNC-VNIIEF since 2009. With the help of LOGOS products, engineers can simulate the processes of hydrogas dynamics, heat propagation in a solid, thermal convection, radiation transfer, solve linear and nonlinear problems of mechanics of a deformable solid, determine deformation and stress fields (stressed-deformed state), investigate the issues of strength and mechanics of structural destruction, as well as the interaction of physical and mechanical processes and products with each other (solving multidisciplinary problems). LOGOS is included in the Unified Register of Russian Software and Databases for EVMMincials of Russia and is used in high-tech industries, including aircraft engineering, shipbuilding, heavy engineering, rocket and space industry, energy/nuclear power of, industrial construction, etc.

The digital platform for the development and use of digital twins CML-Bench is already used by a number of domestic enterprises of the high-tech industry and universities for digital testing, in the process of developing and optimizing complex products and structures, for the development of digital product twins. Integration with such a widespread, yet multifunctional software complex as LOGOS will allow users of both products to improve the quality and speed of calculations by seamlessly transmitting and managing digital models and data created using LOGOS platform modules. In addition, LOGOS is also used in educational activities - students of the Advanced Engineering School of SPbPU Digital Engineering are already successfully using LOGOS for training and as part of project implementation. For example, many of our undergraduates actively mastered with the help of LOGOS the basics of computational mechanics and digital engineering in atomic engineering at the summer school of Centrotech-Engineering LLC. commented Alexey Borovkov, the potential of the integration, Vice-Rector for Digital Transformation of SPBPU, chief designer for the key scientific and technological direction of development of the SPBPU "System Digital Engineering," head of the Advanced Engineering School SPBPU "Digital Engineering"

On the Digital Platform for the development and use of digital counterparts CML-Bench, the following LOGOS software modules were integrated:

• "LOGOS Strength" - a module that provides solving a wide range of problems in the field of mechanics of a deformable solid; functional capabilities of the module cover static, dynamic and vibration strength tasks.
• "LOGOS Heat" is a module that allows solving problems of thermal conductivity, radiation and phase transitions in solids and stationary media.
• "Aero-hydro LOGOS" is a module for solving hydrogas dynamics problems, containing a set of models for modeling single-phase flows, which allows modeling compressible and uncompressible, pre-, super- and hypersonic flows, laminar and turbulent flows; the module also implements modeling of multiphase flows and currents with a free surface, it is possible to simulate combustion and heat and mass transfer processes, as well as solving aeroacoustics problems.
• PrePost LOGOS is a software tool that provides a complete cycle of preparation and processing of the design model - from preparing geometry, creating a design grid, setting initial parameters and boundary conditions, to visualizing the calculation results.

The purpose of Logos is to conduct engineering analysis and mathematical modeling of physical processes in high-tech products and systems in the interests of different industries. The Logos program package is aimed at achieving import independence and technological leadership of the Russian Federation by increasing the efficiency of designing and creating high-tech products based on the introduction of digital twin technologies and digital tests. told Rashit Shagaliev, Deputy Director-Deputy Scientific Director of FSUE RFNC-VNIIEF, Corresponding Member of the Russian Academy of Sciences

The CML-Bench digital platform with integrated LOGOS modules will allow the team of engineers of PISH SPbPU to apply the development of Rosatom State Corporation with maximum productivity, since the possibilities of parallelizing and accessibility of solving problems in the "smart queue" mode, as well as processing results and forming a matrix of requirements, targets and resource restrictions are used. Thus, when solving, for example, hydrogas dynamics problems in conjunction with the LOGOS platform, the CML-Bench digital platform becomes an effective tool for developing and applying CFD models. (Computational Fluid Dynamics is a numerical method for analyzing hydrodynamic processes that allows you to investigate the behavior of fluid and gas flows under different conditions and with different geometries), including in the FSI production (Fluid - Structure Interaction).

Specialists of the Advanced Engineering School of SPbPU "Digital Engineering" are already actively using the "LOGOS" program package to solve engineering problems in the interests of the high-tech industry, in particular in the nuclear, aviation and space industries, in engine building, power engineering and oil and gas engineering.

The development of the CML-Bench digital platform and the creation of industry-specific systems digital engineering technologies on its basis is carried out within the framework of the key scientific and technological direction of SPBPU State University "System Digital Engineering" (KNTN-1).

2024: Application of Digital Twin Technology in Railway Engineering

Specialists Scientific of the world-class center "Advanced Digital Technologies" St. Petersburg Polytechnic University Peter the Great (NCMU SPbPU) first used digital engineering methods and technology digital twins in the development of elements of railway rolling stock. transport The work is carried out on the basis the Russian of development - a digital platform for the development and use of digital counterparts CML-Bench. This was announced on March 15, 2024 by representatives of SPBPU.

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Фото: SPbPU

As reported, the existing calculation methods in railway engineering were developed in the middle of the 20th century on the basis of experimental data. They have sufficient qualitative convergence (the results of computer modeling qualitatively coincide with the behavior of a real object) for existing equipment, however, for the development of equipment, these methods often turn out to be ineffective, since they do not take into account many factors related to the peculiarities of materials and structures, the proposed modes and conditions of operation of rolling stock.

The digital twin technology is based on a matrix of requirements, targets and resource constraints, allowing you to take into account many factors, which is difficult to do without the use of advanced digital technologies, mathematical and computer modeling based on models with a high level of adequacy to real materials, designs and operational modes. The high-tech industry is developing in this direction, as we are increasingly transferring the process of developing industrial products into the digital space, and therefore the approval by the Government of the Russian Federation of the strategic direction in the field of cipher transformation of manufacturing industries, which for the first time introduces the concept of digital certification as a specialized business process based on thousands and tens of thousands of digital (virtual) tests of both individual components and the system as a whole, the purpose of which is to pass the entire complex of full-scale, certification and other tests the first time. explained the practical significance of the use of digital engineering methods in railway engineering, Vice-Rector for Digital Transformation of Peter the Great St. Petersburg Polytechnic University, Head of the World-Class Scientific Center SPBPU "Advanced Digital Technologies" Alexey Borovkov

Specialists of the World-Class Scientific Center "Advanced Digital Technologies" SPbPU developed the architecture of the digital twin of the crew part of the locomotive and created mathematical and computer models of the components of the locomotive trolley. Engineers also created more than 40 virtual test benches and a virtual test site for numerous digital tests and checks of compliance of structural elements with a matrix of requirements and targets, proposed to apply methods for analyzing the types and consequences of potential design failures and methods for calculating the cost of the design life cycle, based on information generated using a digital product twin.

In addition, the specialists of NCMU SPbPU have developed other approaches for conducting design checks using multidisciplinary computer modeling methods and a system for exchanging data between models, as well as software modules for collecting and processing modeling results on the CML-Bench (R) digital platform.

The use of digital twin technology and Russian software allows you to optimize the positive economic effect according to the criteria of quality, speed and cost of development. As of March 2024, as a result of optimization, the result of a reasonable reduction in the metal consumption of various parts of trolley structures by 14% is achieved, taking into account the strength and resource indicators according to the matrix of requirements, target indicators and resource limitations. That is, the design retains its dimensional limitations, strength characteristics, but has less weight, and therefore material intensity. The use of the digital platform for the development and application of digital counterparts CML-Bench allows you to optimize the timing and analysis of multivariable modeling and conduct an informed choice of design solutions, thereby reducing the development time by two or more times compared to traditional digital approaches. noted Ph.D. Yuri Zhitkov, Head of the System Engineering Department of NCMU "Advanced Digital Technologies" SPbPU, Researcher

In the coming years, the team of specialists plans to further add techniques and approaches to the design of complex railway equipment, integrated integration of virtual test benches with the aim of developing the technology of digital product twins based on the CML-Bench digital platform, the development of a storage system and the exchange of data results multidisciplinary calculations, optimization of methods for analyzing modeling results using machine learning technologies, integration of tools for analyzing the types and consequences of potential failures design, as well as analysis of the cost of the design lifecycle, refinement of the matrix of requirements, targets and resource constraints. The results obtained are relevant and applicable in the practice of engineering design and the development of modernization projects for existing railway equipment.