SV201 – Forces in a Truss and Redundant Truss

 

SV201 – Forces in a Truss and Redundant Truss

The experiment Forces in a Truss/Redundant Truss is intended for use with the Armfield Universal Frame and enables the experimental investigation of deflection of trusses under load.

This then allows Castigliano theorems to be proven.

This exercise module has the following properties:

  • Assembly of both a basic roof and Warren truss via various length members, detent pins and joint hubs
  • Quick and easy assembly of members via special detent pins and joint hubs
  • Up to 10 members possible in one joint hub
  • Loading unit with spindle drive and universal load cell for force measurement
  • Members suitable for use with both trusses

Software Included as standard

Description

All members are clearance-drilled at each end to allow the detent pins to engage freely in the joint hub.

The machined joint hubs are drilled with a circular pattern of holes for the detent pin connections. In each joint hub there are 10 holes so that scale divisions of 30° and 45° are possible. The smallest angle spacing between two members is 30°. This enables up to 10 members to engage on one truss hub.

One member on each truss hub must be rigidly located in the joint hub via a drilled location hole. This is necessary in order to obtain a rigid, statically certain truss. Without this, the joint hub would itself become an additional member of the truss.

The external stresses are applied to the truss via the load cell assembly. The experiment frame deforms under the force and the deflection of the frame can be measured.

The load cell assembly can be attached to the frame at any truss hub, it enables tensile and pressure forces of up to 400N to be applied and measured.

Technical Specifications

  • 5 x Truss Joint Hub
  • Truss Hub Angle graduations 30°,45°,60°,90°
  • 1 x 116mm Member
  • 1 x 134mm Member
  • 1 x 198mm Member
  • 4 x 207.5mm Member
  • 2 x 295.34mm Member
  • Aluminium tube: Ø 10 x 1.0mm
  • Material: 6060 T6 – BS EN 755-2:2016
  • Cross-sectional area: 28.274 x 10-6m2
  • 2 x Sealed Bearing 10mm x 26mm x 8mm
  • 14 x 6mm Detent Pin
  • Load Cell Assembly Force range: 0–400N
  • Measurable range of the digital indicator: 12.7mm
  • Resolution: 0.01mm

Features & Benefits

  • Allows construction of both a basic roof truss and warren truss
  • Simplified versions of realistic structures
  • Load can be applied at different joints
  • Redundant member easily adjusted for length
  • Software included as standard

Downloads

  • Study of strains in a statically determinate structure
  • Study of strains in a statically indeterminate structure
  • Study of stress in a statically determinate structure
  • Study of stress in a statically indeterminate structure
  • Study of forces in a statically determinate structure
  • Study of forces in a statically indeterminate structure
  • Study of deflections in a statically determinate structure
  • Study of deflections in a statically indeterminate structure

  • Castiglianos’ Theorem
  • Determinate and Indeterminate Structure
  • Bow’s Notation
  • Stress
  • Strain
  • Reactions

  • Storage temperature: -10°C to +70°C
  • Operating temperature range: +10°C to +50°C
  • Operating relative humidity range: 0 to 95%, non-condensing

SV100: Bench Mounted Frame
SV101: Structures Interface Unit

Electrical supply:

110/120V, 60Hz
220/240V, 50Hz

  • SV100: Bench Mounted Frame
  • SV101: Structures Interface Unit
  • PC with a USB port, running Windows 7 or above

PACKED AND CRATED SHIPPING SPECIFICATIONS

Volume: 0.1m³
Gross Weight: 25kg

Length: 1.176m
Width: 0.392m
Height: 0.922m

  • SV201: Redundant truss
  • SV100: Bench Mounted Frame (Sold separately)
  • SV101: Structures Interface Unit (Sold separately)

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