GB1066845A - Improvements relating to damping vibrations in testing machine structures - Google Patents

Improvements relating to damping vibrations in testing machine structures

Info

Publication number
GB1066845A
GB1066845A GB1323663A GB1323663A GB1066845A GB 1066845 A GB1066845 A GB 1066845A GB 1323663 A GB1323663 A GB 1323663A GB 1323663 A GB1323663 A GB 1323663A GB 1066845 A GB1066845 A GB 1066845A
Authority
GB
United Kingdom
Prior art keywords
damping
columnar member
vibration
spring
damping mass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1323663A
Inventor
Richard Northam Knights
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dowty Rotol Ltd
Original Assignee
Dowty Rotol Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dowty Rotol Ltd filed Critical Dowty Rotol Ltd
Priority to GB1323663A priority Critical patent/GB1066845A/en
Priority to CH415364A priority patent/CH426383A/en
Publication of GB1066845A publication Critical patent/GB1066845A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
    • G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/04—Monodirectional test stands
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0048—Hydraulic means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

1,066,845. Vibration dampers. DOWTY ROTOL Ltd. March 18, 1964 [April 3, 1963], No. 13236/63. Heading F2S. A machine comprises a structure which includes at least one columnar member 7 having one portion fixedly mounted and an unsupported portion extending therefrom. A vibration damper device which includes a damping mass 23 is mounted on the unsupported portion of the columnar member 7 for movement in a plane perpendicular to the longitudinal axis of the columnar member 7. Friction damping means are arranged to damp relative movement between the damping mass 23 and the unsupported portion of the columnar member 7. In the construction shown, the damping mass is normally centred about a cap 18 of the unsupported portion by four, equispaced, spring- loaded plungers 25. The friction damping means comprises a plate 19 and a spring-loaded ring 22 mounted one on each side of the damping mass 23 and each being provided with a friction lining 24. The spring loading of ring 22 may be adjusted by screws 27. Two further vibration damping devices (Figs. 1, 4, not shown) are mounted in a hollow head (13), one device for each column (7). Each device comprises two spring cantilever rods (42) which carry at their ends a damping mass (41) of annular shape. A slide block (44) actuated by a manually operated screw (47) moves along the rods to adjust the effective length of the rods (42) and thus the frequency of the assembly is varied. The screw (47) and an opposite handed screw-thread (48) for the second vibration damper are part of a rod (45) which passes through both damping masses (41) and a bearing block (46). The base of the machine, which is for material fatigue testing, houses a vibration generator, a test piece being connected between the vibration generator and a central anchorage (12) of a beam (8). The beam (8) is clamped to the columns (7) by a tapered collet (9) and a screwthreaded clamp ring (10) and is raised and lowered by a power winch (14).
GB1323663A 1963-04-03 1963-04-03 Improvements relating to damping vibrations in testing machine structures Expired GB1066845A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1323663A GB1066845A (en) 1963-04-03 1963-04-03 Improvements relating to damping vibrations in testing machine structures
CH415364A CH426383A (en) 1963-04-03 1964-04-01 Material testing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1323663A GB1066845A (en) 1963-04-03 1963-04-03 Improvements relating to damping vibrations in testing machine structures

Publications (1)

Publication Number Publication Date
GB1066845A true GB1066845A (en) 1967-04-26

Family

ID=10019316

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1323663A Expired GB1066845A (en) 1963-04-03 1963-04-03 Improvements relating to damping vibrations in testing machine structures

Country Status (2)

Country Link
CH (1) CH426383A (en)
GB (1) GB1066845A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2041544B1 (en) * 2006-06-29 2017-03-22 Mts Systems Corporation Testing system with soft reaction structure
CN111458288A (en) * 2020-05-14 2020-07-28 中国船舶科学研究中心 Material damping characteristic testing device
CN111992269A (en) * 2020-09-25 2020-11-27 山东交通职业学院 Road transportation analogue test platform
CN114016573A (en) * 2021-10-27 2022-02-08 上海晨菲水务科技有限公司 Municipal administration secondary water supply equipment with stable structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2041544B1 (en) * 2006-06-29 2017-03-22 Mts Systems Corporation Testing system with soft reaction structure
CN111458288A (en) * 2020-05-14 2020-07-28 中国船舶科学研究中心 Material damping characteristic testing device
CN111992269A (en) * 2020-09-25 2020-11-27 山东交通职业学院 Road transportation analogue test platform
CN114016573A (en) * 2021-10-27 2022-02-08 上海晨菲水务科技有限公司 Municipal administration secondary water supply equipment with stable structure
CN114016573B (en) * 2021-10-27 2024-04-19 上海晨菲水务科技有限公司 Municipal administration secondary water supply equipment with stable structure

Also Published As

Publication number Publication date
CH426383A (en) 1966-12-15

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