Ergonomic design of beverage can lift tabs based on numerical evaluations of fingertip discomfort

Han, Jing; Nishiyama, Sadao; Yamazaki, Koetsu; Itoh, Ryouiti

doi:10.1016/j.apergo.2007.05.010

Cited by 16 publications

(8 citation statements)

References 17 publications

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“…[25] Others FE model have also been developed in order to study the interaction of the hand, more specially the fingertip, with objects. [26][27][28][29][30][31] Finally, many FE models have been developed in different context and for different type of loading. Many have been developed in the context of loading transmission into the wrist, or in order to investigate the behavior of a bone after its fracture fixation, or also to investigate vibration's transmission.…”

Section: Introductionmentioning

confidence: 99%

A first step in finite-element simulation of a grasping task

Chamoret

Bodo

Roth

2016

Computer Assisted Surgery

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This paper investigates a biomechanical aspect of human hand during grasping, using the finiteelement method. A realistic three-dimensional finite-element (FE) model of a human hand is developed, including wrist bones, phalanges, soft tissues and skin, reconstructed from medical computed tomography (CT) scan images. Material laws of the literature have been implemented in the model, in order to be able to simulate a simple activity of grasping. In a human design context, this model allows an interesting biomechanical study, which simulates the grasping task in a biofidelic manner. This model is a first step in the modeling of the human hand that can lead to future studies dealing with the interaction of the hand with its environment for the improvement of safety requirements of future products development.

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Section: Introductionmentioning

confidence: 99%

A first step in finite-element simulation of a grasping task

Chamoret

Bodo

Roth

2016

Computer Assisted Surgery

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“…The determination of the JSI is based on the estimate of six strain variables and on the multipliers determined by those. The strain variable, intensity of exertion (IE) refers to the maximum effort that can be exerted by a human being [10]. Hand-dependent maximum gripping forces by [7] can help to determine the effort.…”

Section: Determination Of Hand Stressmentioning

confidence: 99%

Objective analysis for evaluation the stress of the hand

Ünlü¹,

Gust²,

Mersch³

2018

Anatomy, Posture, Prevalence, Pain, Treatment and Interventions of Musculoskeletal Disorders

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The hand is constantly in contact with products and therefore stressed differently. Heavy stress is the cause of unpleasant sensation and can lead to common hand diseases in the worst case. The chapter starts with the description of hand diseases and with methods to determination of hand stress. Subsequently, the chapter is continued with a literature review of hand stress analysis refer to objectively methods. In the main part, two objective methods are developed and presented to analyze the hand stress. These methods allow the simulation and the measurement of hand stress. Compared to the classical approach, the results of the objective methods show a higher accuracy in faster review of hand stress. Finally, the chapter ends with a discussion of the results and gives opportunities to improve the hand model and the measurement system.

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“…In addition to the above-mentioned basic features, universal designs based on ergonomics have been required while developing beverage containers and are expected to enhance consumers' convenience. For example, Han et al have investigated that the relationship between tab ring shape and the feelings in the fingertip when opening aluminum beverage cans; and they have concluded that the tab with a larger contact area with finger is better 1 . Openability of the bottle caps, which is one of a demand of aluminum beverage bottles for consumers' satisfaction, has been studied by some researchers [2][3][4][5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Development of Evaluation Function for Openability of Opening Diameter of Aluminum Beverage Bottles and Its Application to Optimum Design

Chihara¹,

Yamazaki²,

Sobajima³

et al. 2010

13th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference

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The present paper proposes an evaluation function of openability considering the transition of gripping postures, i.e. two-finger gripping and three-finger gripping, so as to evaluate opening ease of aluminum beverage bottles and to specify the rigorous dimension of the cap diameter that is best suited for consumers' satisfaction. First, we have investigated effects of cap diameter on the gripping postures. It is found that subjects tend to shift the gripping posture from two-finger gripping (gripping with thumb and first finger) to threefinger gripping (gripping with thumb, first, and second finger) with increase of the opening diameter. An evaluation function is defined as a ratio between maximum torques that consumers can apply and a required torque for opening. In addition, the cap diameter is the only design variable, and the thumb length, which associates with the transition of the gripping postures and a maximum gripping force, is selected as a state variable in order to take individual differences into consideration. Moreover, an evaluation function is formulated considering the transition of the gripping postures of consumers. The function is composed by using the data obtained from measurement of the maximum gripping force, the maximum torque, and the thumb length, and then the function is optimized. The result of optimization has shown that the optimum opening diameter is obtained at 28.0 mm in case of the subjects.

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Ergonomic design of beverage can lift tabs based on numerical evaluations of fingertip discomfort

Cited by 16 publications

References 17 publications

A first step in finite-element simulation of a grasping task

A first step in finite-element simulation of a grasping task

Objective analysis for evaluation the stress of the hand

Development of Evaluation Function for Openability of Opening Diameter of Aluminum Beverage Bottles and Its Application to Optimum Design

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