Updated on February 5, 2025

Substance-field modeling

Substance-field modeling, like contradictions application, is used to model a problem identified in the analytical phase of the project. However, it offers a different perspective on the problem compared to contradictions.

Basic assumption in the approach is that a minimally functioning system must consist of 3 basic elements:
1. 2 substances (S), i.e., objects with a rest mass involved in the system, and
2. a field (F), i.e., entity without a rest mass that establishes an interaction between substances.

The substances are closely related to the key problem that needs to be solved. They can refer to microscopic objects, single components, or the entire technical system. The field is typically one of the types selected from the MATChEM model.

Abstracting them presents a simple visual format of the key problem that needs to be solved:

In classical TRIZ, the tool used to identify the substances and fields needed to create a Su-Field of the problem was substance-field analysis. Today, this tool is no longer in use, as key disadvantages identified during CECA provide detailed information for this purpose.

The tool designed for processing the substance-field models (Su-Fields) of problems is the system of 76 standard inventive solutions (SIS), which leads to solution models represented by selected SISs. In some cases, these solutions can also be presented in the form of Su-Fields. Thus, substance-field analysis is the only TRIZ tool where the model of solution can have the same form as a model the problem.

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