A method and system for storing and retrieving historical data in a fractional-order model

Abstract

This application provides a method and system for storing and retrieving historical data for fractional-order models, relating to the field of finite element analysis technology. The method, after constructing an external file system with direct binary access, establishes historical variable index tags based on the element numbers, Gaussian integral points, and time dimension information associated with the fractional-order model. When current analysis data is obtained, the write address of the current analysis data in the external file system is calculated based on the historical variable index tags, and the current analysis data is written to the external file system. When starting a historical loop, the read addresses corresponding to each past time dimension are calculated in reverse based on the historical variable index tags, and historical data is retrieved from the external file system to temporary variables. This method utilizes binary storage, ensuring that double-precision floating-point numbers strictly occupy 8 bytes, improving storage space utilization, and enhances computational efficiency by establishing storage and read paths with the external file system.

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