文胸穿着力学分析

对文胸的各个构成部件进行受力分析,为内衣的设计提供必要的参考,同时提高消费者对内衣的认识.     

女大学生文胸偏好研究与设计分析

将东华大学服装·艺术设计学院的部分一、二年级女研究生及其他高校在校女大学生作为调查对象,就文胸的颜色、风格、装饰材料、罩杯款式、钢圈、塑形功能、价格等进行了调查研究,分析了女大学生选择文胸时对这些因素的偏好.     

运动文胸结构设计要素对穿着舒适性的影响

为探究运动文胸各结构设计要素作用于人体的穿着舒适性,使用马丁测量仪测量7位罩杯号型为75B的女性裸体状态和穿着6款低、中、高强度支撑的运动文胸时的尺寸;借助气囊压力测试仪对人体的胸、背、肩、侧、下胸围等处的9个压力测试点进行静态压强测试和主观舒适度评定;并观察运动前后下围织带、肩带、夹弯、领口弧线处标记线的位移变化。研究发现:低强度运动文胸各点压强值小,舒适度高,高强度文胸对乳房左右和前后方向束缚大,文胸下围织带和罩杯向上滑移,肩带向颈部内侧滑移,后背和夹弯处运动前后滑移量少;高强度运动文胸应注重优化肩带、后背夹弯弧线、下围织带处的结构设计,减小人体肩部、下胸围、后背处的压强,提高整体穿着舒适性。     

采用动画软件进行三维文胸罩杯纸样设计的方法

提出了以三维人体建模为基础,利用动画软件的皮肤变形技术和三维模拟效果图切展为二维平面形态的功能,解决文胸罩杯的设计和纸样绘制等问题的方法,并讨论了实现此方法的技术及步骤。     

Breast volume is affected by body mass index but not age

Abstract

Background: This study aimed to establish normative breast volume data for women of varying ages, body masses and breast sizes, and to determine the effect of age and body mass index (BMI) on breast volume.

Methods: The breast volume of 356 women (age range: 18.1–83.7 years; BMI range: 18.4–54.5 kg/m²) was measured using three-dimensional scanning in a prone position.

Results: Breast volumes ranged from 48 to 3100 mL. Although breast volume was not significantly affected by age, it was significantly affected by BMI, with the breast volume of overweight and obese women being two-to-three times greater than women with normal BMI’s.

Conclusion: It is recommended that bra cups must be designed to support the wide range and increasing magnitude of breast volumes exhibited by women.

Practitioner summary: This original research provides evidence for bra designers and manufacturers on the range of breast volumes of women and the significant effect of BMI on breast volume. Bra cups need to be designed to support the wide range and increasing magnitude of breast volumes exhibited by women.     

Bra band size measurements derived from three-dimensional scans are not accurate in women with large,ptotic breasts

This study investigated differences in standard measurements used to determine bra size, under-bust chest circumference (UBCC) and over-bust chest circumference (OBCC), measured from a three-dimensional scan (hand-held scanner) compared to the direct measurement in 111 women (age 21–56 years; right breast volume 57–1672 mL; bra size 10A–18G). Bland–Altman plots of UBCC measurements showed a large positive bias and wide limits of agreement (12 cm; ?4.6 to 28 cm), which increased as band size increased but decreased when the breasts were digitally removed from the scan prior to the UBCC measurement. The difference in UBCC measurements determined from scans compared to direct measurement had a strong positive correlation with breast volume and breast ptotis. The OBCC measurements showed a small positive bias (2.4 cm; ?3.4 to 8.4), consistent across the range of bra sizes. Bra band size measurements determined from three-dimensional scans can be inaccurate in women with large, ptotic breasts.

Practitioner Summary: We investigated potential errors in anthropometric data derived from three-dimensional scans used for bra design and fit. Bra band size measurements taken from three-dimensional scans were over-estimated in women with large breasts, whereas bra cup size measurements were accurate to within one-cup size across the entire range of bra sizes.     

Evidence-based recommendations for building better bras for women treated for breast cancer

Participating in exercise is beneficial for women who have been treated for breast cancer. However, not being able to find a comfortable exercise bra can be a barrier to exercise participation. This study aimed to systematically investigate what breast support women treated for breast cancer want when they exercise in order to provide evidence-based recommendations to improve exercise bra designs for these women. Based on 432 responses from a national online survey, frequency and relationship data were analysed (binary logistic regression) to understand exercise bra issues pertinent to this population. These issues included being able to control for asymmetrical cup sizes, managing heightened skin sensitivity, managing fluid (size) fluctuations, managing a prosthesis and restoring body image by restoring shape. This study provides evidence-based recommendations to inform an exercise bra design that will meet the unique needs of women treated for breast cancer. Rigorous, evidence-based evaluations of exercise bras for women treated for breast cancer may contribute to their well-being and quality of life through enhanced designs.     

Implementation and application of bra recommendation system based on breast shape北大核心CSCD

The individual differences among the female breast shape, the movement state and design elements of bra structure will result in the match problem during bra choice. Because online bra can't be tried on, how to enhance the satisfaction of bra consumption experience has become an urgent problem. In this paper, an idea of bra recommendation system based on breast shape is put forward. On the basis of establishment of databases of breast shape and bra products, the matching rule between the design elements and breast shapes are obtained through the evaluation experiment of bra pressure comfort and shaping effect. Then the bra recommendation system are designed and implemented. Finally, the personalized products are recommended through the link with the online mart. The realization of this system can not only promote the satisfaction of buying and dressing experience but also provide references for design and production of bra enterprises. © 2018 China Silk Association. All rights reserved.     

文胸模杯曲面形态特征曲线提取与分析

为获得控制文胸模杯曲面形态的特征曲线,实现模杯的正向设计,采用三维扫描仪获取模杯的点云数据,用逆向工程软件进行实体模型构建,然后根据模杯角度及特征点构建了26条模杯内外曲面形态曲线。利用各曲线拐点、峰值点、曲率最大点及最小点的分布位置一致性,提取能够反映模杯曲面特征信息的内外曲面形态特征曲线5条。结果表明:模杯结构特征曲线上的几何参数分布离散程度更小,较角度特征曲线更能反映不同类型模杯的曲面形态特征。拟合各特征曲线弧长与模杯杯深的函数关系,通过改变形态特征曲线上的几何参数可控制曲面形态结构。     

文胸肩带拉伸性能测试分析

以文胸肩带为研究对象,基于织物的主要力学性能和拉伸弹性指标,结合肩带自身造型和使用特点,进行拉伸断裂试验和定伸长反复拉伸试验,获得肩带的各拉伸性能指标。基于文胸肩带拉伸曲线的自身特征,结合曼列狄斯（Meredith）法确定纤维屈服点的作图过程,探讨肩带有效弹性终点的确定方法。应用配对检验的方法分析了肩带单次拉伸和5次反复拉伸后弹性回复率、塑性变形率变化的差异显著性,结果表明肩带在长时间使用过程中,其弹性回复率会随使用时间的累积发生显著衰变,其塑性变形率会产生显著积累。应用方差分析和协方差分析探讨了疲劳伸长对肩带弹性回复率、塑性变形率的影响,结果表明肩带的拉伸回弹性能与正常使用条件下的疲劳伸长无关。