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Mechanical vibration — Rotor balancing — Part 31: Susceptibility and sensitivity of machines to unbalance
| 분야 | ISO/TC 108/SC 2 : Measurement and evaluation of mechanical vibration and shock as applied to machines, vehicles and structures |
|---|---|
| 적용범위 | ISO 21940-31:2013 specifies methods for determining machine vibration sensitivity to unbalance and provides evaluation guidelines as a function of the proximity of relevant resonance rotational speeds to the operating speed. ISO 21940-31:2013 is only concerned with once-per-revolution vibration caused by unbalance. It also makes recommendations on how to apply the numerical sensitivity values in some particular cases. It includes a classification system that can be applied to machines which is related to their susceptibility to a change in unbalance. Machines are classified into three types of susceptibility and five ranges of sensitivity. The sensitivity values are intended for use on simple machine systems, preferably with rotors having only one resonance speed over their entire operating speed range. The sensitivity values can also be used for machines that have more resonance speeds in their operating speed range if the resonance speeds are widely separated (e.g. by more than 20 %). The sensitivity values given are not intended to serve as acceptance specifications for any machine group, but rather to give indications regarding how to avoid gross deficiencies as well as specifying exaggerated or unattainable requirements. They can also serve as a basis for more involved investigations (e.g. when in special cases a more exact determination of the required sensitivity is necessary). If due regard is paid to the values given, satisfactory running conditions can be expected in most cases. The consideration of the sensitivity values alone does not guarantee that a given magnitude of vibration in operating is not exceeded. Many other sources of vibration can occur which lie outside the scope of ISO 21940-31:2013. |
| 국제분류(ICS)코드 | 21.120.40 : 평형 및 균형 시험기 |
| 페이지수 | 19 |
| Edition | 1 |
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ISO 21940-31:2013 | Mechanical vibration — Rotor balancing — Part 31: Susceptibility and sensitivity of machines to unbalance | 2013-08-07 | 표준 |
ISO 21940-13:2012 - Mechanical vibration — Rotor balancing — Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors 상세보기
ISO 21940-32:2012 - Mechanical vibration — Rotor balancing — Part 32: Shaft and fitment key convention 상세보기
ISO 21940-23:2012 - Mechanical vibration — Rotor balancing — Part 23: Enclosures and other protective measures for the measuring station of balancing machines 상세보기
ISO 21940-14:2012 - Mechanical vibration — Rotor balancing — Part 14: Procedures for assessing balance errors 상세보기
ISO 21940-12:2016 - Mechanical vibration — Rotor balancing — Part 12: Procedures and tolerances for rotors with flexible behaviour 상세보기
ISO 21940-23:2012 - Mechanical vibration — Rotor balancing — Part 23: Enclosures and other protective measures for the measuring station of balancing machines 상세보기
ISO 21940-13:2012 - Mechanical vibration — Rotor balancing — Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors 상세보기
ISO 21940-21:2012 - Mechanical vibration — Rotor balancing — Part 21: Description and evaluation of balancing machines 상세보기
ISO 21940-12:2016 - Mechanical vibration — Rotor balancing — Part 12: Procedures and tolerances for rotors with flexible behaviour 상세보기
ISO 21940-14:2012 - Mechanical vibration — Rotor balancing — Part 14: Procedures for assessing balance errors 상세보기
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