A mathematical formula to find the wing band length of a bra to fit the comfort zone of the wearer:

Journal of Textiles and Fibrous Materials

SapadhiAbeysuriya¹ 

关键词: Bra b;    elongation;    Navier equations;    weighted elongation;   

DOI  :  10.1177/2515221118785917

学科分类：工程和技术（综合）

来源: Sage Journals

【 摘 要 】

This work concerns on finding a formula of the length of a wing band within the comfort zone. Bra band elongation (BBE) test is one of the main methods that is being used to validate the comfort level of a bra bottom band when it is on the body. This test validates the suitable bra bottom band length, which is within the comfort zone for the wearer. However, BBE test by trial and error method is time-consuming and cost ineffective. Therefore, this research carries on an analytical method of obtaining a formula for the elongation of a wing band of a bra, which is assumed to be a rectangular thin plate. We obtain a new formula for the weighted elongation of the wing band using the Navier equation and compare the analytical weighted elongations and experimental elongation with different force values for the different bra sizes and for the different fabrics. With the weighted parameters, the model on elongation of the wing band fits with actual data and we provide specific different weighted parameters for different bra sizes to find the exact original length of the wing band of a bra.

【 授权许可】

CC BY