3DSSPP

To complete 3DSSPP analysis proceed to 3DSSPP software.

U of M 3D SSPP Description: This software was developed by the University Of Michigan College Of Engineering. The 3D SSPP software predicts static strength requirements for tasks such as lifts, presses, pushes, and pulls. The program provides an approximate job simulation that includes posture data, force parameters, and male/female anthropometry. Output includes the percentage of men and women who have the strength to perform the described job, spinal and compression forces, and data comparisons to NIOSH guidelines. The user can analyze torso twists and bends and make complex hand force entries. Analysis is aided by an automatic posture generation feature and three dimensional human graphic illustrations.

Features: 3D SSPP can provide a wide variety of information and analyses ranging from predicted low back compression forces to population strength capability information. This information is accessed through various reports available in 3D SSPP. The following reports are currently present:

Task Input Summary: Body segment angles, hand locations, and hand force magnitude and direction.

Analysis Summary: Hand forces, L5/S1 disc compression, percent capable, balance, and coefficient of friction.

Anthropometry: Anthropometric data including body segment lengths, center of gravity, and body segment weights.

Posture: Limb and trunk included angles calculated by vectoral analysis on the input posture.

Joint Locations: Calculated locations of each joint.

Joint Moments: Resultant moments produced by the load and the body weight about the main reference axes at each joint.

Spinal Forces and Moments: Resultant moments and forces at the spinal segments.

Strength Capabilities: For each joint articulation: resultant moment produced by the load and body weight; muscle effect; population strength means, standard deviations, and percent of the population with the strength capability to generate a moment larger than the resultant moment.

Strength Direction Vectors: Unit vectors for the directions of the strength moments in the main reference (global) coordinate system.

Sagittal Plane Lowback Analysis: Lower back data: L5/S1 compression and shear forces, estimated ligament strain.

3D Lowback Analysis: More in-depth lower back analysis that considers the effect of additional muscle action in the torso.