# US 2014/0207435 A1 · Computer based models for absorbent articles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0207435 A1 - Document ID: US20140207435A1 - Status: Published application - Kind: A1 - Application number: 13/746,552 - Filed: 2013-01-22 - Published: 2014-07-24 - Earliest claimed: 2013-01-22 - Assignees: The Procter & Gamble Company - Applicants: The Procter & Gamble Company - Inventors: Arthur Joseph KOEHLER; Gene Xiaoqing HUANG; Chengming WANG; Chuming Luke HWANG; Mel ALLENDE-BLANCO; Matthew Joseph MACURA - Web page: https://patentgrep.com/patent/US20140207435A1 ## CPC - G06F 30/28: using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD] - G06F 30/20: Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) - G06F 2111/10: Numerical modelling - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract Methods of using computer based models for simulating the physical behavior of bodily fluids with absorbent articles. ## Claims ### Claim 1 A method of simulation, comprising: representing an absorbent article with a computer based model of the absorbent article, wherein the absorbent article includes an absorbent material represented by elements, and wherein the elements representing the absorbent material have element lengths that are less than or equal to 0.5 millimeters; first transforming the model of the absorbent article by simulating a fitting of the absorbent article onto a human body to form a computer based model that represents the fitted absorbent article; representing a bodily fluid with a computer based model of the bodily fluid represented by elements, wherein the elements representing the bodily fluid have element lengths that are less than or equal to one millimeter; and second transforming the model of the absorbent article by simulating a provision of the bodily fluid to the fitted absorbent article to form a computer based model that represents a distribution of the bodily fluid and the fitted absorbent article, as a fitted, wet absorbent article. ### Claim 2 (depends on 1) The method of claim 1, wherein the first transforming the model of the absorbent article by simulating a fitting of the absorbent article onto a human body to form a computer based model that represents the fitted absorbent article uses finite element analysis. ### Claim 3 (depends on 1) The method of claim 1, wherein the second transforming the model of the absorbent article by simulating a provision of the bodily fluid to the fitted absorbent article to form a computer based model that represents a distribution of the bodily fluid and the fitted absorbent article, as a fitted, wet absorbent article uses computational fluid dynamics. ### Claim 4 (depends on 1) The method of claim 1, wherein the elements representing the absorbent material are solid elements. ### Claim 5 (depends on 1) The method of claim 1, wherein the elements representing the absorbent material are cells, finite difference cells, or a finite volume. ### Claim 6 (depends on 1) The method of claim 1, wherein the elements representing the bodily fluid are cells, finite difference cells, or a finite volume. ### Claim 7 (depends on 1) The method of claim 1, wherein the elements representing the absorbent material are one-dimensional, two-dimensional, or three-dimensional. ### Claim 8 (depends on 1) The method of claim 1, wherein the elements representing the bodily fluid are one-dimensional, two-dimensional, or three-dimensional. ### Claim 9 A method of simulation, comprising: representing an absorbent article with a computer based model of the absorbent article, wherein the absorbent article includes an absorbent material represented by cells, and wherein the cells representing the absorbent material have cell lengths that are less than or equal to 0.5 millimeters; first transforming the model of the absorbent article by simulating a fitting of the absorbent article onto a human body, using finite element analysis, to form a computer based model that represents the fitted absorbent article; representing a bodily fluid with a computer based model of the bodily fluid represented by cells; and second transforming the model of the absorbent article by simulating a provision of the bodily fluid to the fitted absorbent article, using computational fluid dynamics, to form a computer based model that represents a distribution of the bodily fluid and the fitted absorbent article, as a fitted, wet absorbent article. ### Claim 10 (depends on 9) The method of claim 9, wherein the cells representing the bodily fluid have cell lengths that are less than or equal to one millimeter. ### Claim 11 A method of simulation, comprising: representing an absorbent article with a computer based model of the absorbent article, wherein the absorbent article includes an absorbent material represented by cells; first transforming the model of the absorbent article by simulating a fitting of the absorbent article onto a human body, using finite element analysis, to form a computer based model that represents the fitted absorbent article; representing a bodily fluid with a computer based model of the bodily fluid represented by cells, wherein the cells representing the bodily fluid have cell lengths that are less than or equal to one millimeter; and second transforming the model of the absorbent article by simulating a provision of the bodily fluid to the fitted absorbent article, using computational fluid dynamics, to form a computer based model that represents a distribution of the bodily fluid and the fitted absorbent article, as a fitted, wet absorbent article. ### Claim 12 (depends on 11) The method of claim 11, wherein the cells representing the absorbent material have cell lengths that are less than or equal to 0.5 millimeters. ### Claim 13 (depends on 11) The method of claim 11, wherein: the representing of an absorbent article includes representing an absorbent article with a computer based model of the absorbent article, wherein the absorbent article includes an external surface; and the second transforming includes transforming the model of the absorbent article by simulating a flow of the bodily fluid on the external surface of the fitted absorbent article, using computational fluid dynamics, to form a computer based model that represents a distribution of the bodily fluid on the external surface and the fitted absorbent article, as a fitted, wet absorbent article. ### Claim 14 (depends on 11) The method of claim 11, wherein the first transforming includes using finite element analysis to form a computer based model that represents the fitted absorbent article in a dry state. ### Claim 15 (depends on 11) The method of claim 11, wherein the first transforming includes using finite element analysis to form a computer based model that represents the fitted absorbent article with deformation. ### Claim 16 (depends on 11) The method of claim 11, comprising: including, representing an environmental object with a computer based model of the environmental object; and wherein the first transforming includes simulating an interaction between the absorbent article and the environmental object to form a computer based model that represents the fitted absorbent article with deformation from the interaction. ### Claim 17 (depends on 11) The method of claim 11, wherein the representing of a bodily fluid includes representing a urine or menses discharge from a human body. ### Claim 18 (depends on 11) The method of claim 11, comprising: including representing at least a portion of a human body with a computer based model of the human body; and wherein the first transforming includes transforming the model of the absorbent article by simulating a fitting of the absorbent article onto the human body, using finite element analysis, to form a computer based model that represents the fitted absorbent article. ### Claim 19 (depends on 11) The method of claim 11, comprising: including representing at least a portion of a human body with a computer based model of the human body; and wherein the first transforming includes transforming the model of the absorbent article by simulating a fitting of the absorbent article onto the human body, including simulating a movement of the portion of the human body through a natural range of motion, to form a computer based model that represents the fitted absorbent article. ### Claim 20 (depends on 11) The method of claim 11, wherein the second transforming includes using computational fluid dynamics, to form a computer based model that represents the fitted, wet absorbent article, in an unswollen state.