Characterization of Nonlinear and Time-Dependent Behavior of Skin Under Compression

Details

• Personal Author:
  Dong, Ren G. ; Smutz WP ; Wu, John Z.
• Description:
  The vibration energy dissipation in the hand and fingers, which has been associated with vibration- induced injuries, is directly related to the biomechanics of skin and subcutaneous tissues [1]. Therefore, biomechanical properties of skin and subcutaneous tissues are important for the understanding of the pathomechanics of work-related neural and vascular diseases. The soft tissues in fingers are mostly in compression under physiological loading conditions. However, the published mechanical properties of skin [e.g., 2-3] were obtained exclusively during tensile loading. The goal of the present study is to develop a methodology to characterize nonlinear and time-dependent behaviors of skin in compression. Pigskins were used in the present study. Three series of tests were performed: (a) stress relaxation, (b) slow confined compression (1 microm/s), and (c) slow and fast unconfined compressions (1 and 100 microm/s). The parameters in the cqnstitutive model were identified using the force relaxation, slow confined and unconfined compression tests (1 microm/s), while the fast unconfined compression test (100 microm/s) was used to validate the constitutive model. A nonlinear finite element model (FEM) was developed for the model parameter identification and model validation. Our results suggest "that the mechanical behaviors of skin tissues are highly nonlinear and time-dependent; and the deformation behaviors of these soft tissues can be satisfactorily described using the Ogden form. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Cardiovascular Diseases Cardiovascular System Nervous System Nervous System Diseases Occupational Health Safety Skin Vibration
• Keywords:
  Biomechanics Cardiovascular-system-disorders Circulatory-system Nerve-damage Neurovascular-disorders Skin-tests Vibration-disease
• ISBN:
  9781930636019
• Publisher:
  Medical and Engineering Publishers, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  187-188
• NIOSHTIC Number:
  nn:20022346
• Citation:
  Biomedical engineering recent developments: proceedings of the Twenty First Southern Biomedical Engineering Conference, September 28 - 29, 2002, Bethesda, Maryland. Vossoughi J, ed. Washington, DC: Medical and Engineering Publishers, Inc., 2002 Sep; :187-188
• Editor(s):
  Vossoughi J
• Federal Fiscal Year:
  2002
• NORA Priority Area:
  Disease and Injury: Musculoskeletal Disorders of the Upper Extremities ; Research Tools and Approaches: Control Technology and Personal Protective Equipment
• Peer Reviewed:
  False
• Source Full Name:
  Biomedical engineering recent developments: proceedings of the Twenty First Southern Biomedical Engineering Conference, September 28 - 29, 2002, Bethesda, Maryland
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c696083b81064b625514a89e8b4793e43783b155c987dbd59301f3795a95320e2f42eaf2097dc63f8b052fc01dcf019cb5a14fbf85d17f7fee6b81e7b93f7981
• Download URL:
  https://stacks.cdc.gov/view/cdc/199154/cdc_199154_DS1.pdf
• File Type:
  [PDF - 321.28 KB ]