ISO 10326-3-2024 PDF

Full title and description

ISO 10326-3:2024 — Mechanical vibration — Laboratory method for evaluating vehicle seat vibration — Part 3: Specification of dynamic dummies for Z‑axis motion. This part of ISO 10326 specifies technical requirements, acceptance criteria and a validation test for dynamic dummies intended to represent human occupants when testing vehicle seats under vertical (Z‑axis) vibration, and is intended for use with seats fitted to earth‑moving machinery, agricultural wheeled tractors and industrial trucks.

Abstract

This document defines biodynamic response characteristics and performance requirements for dynamic dummies in two mass groups (lightweight 52–55 kg and heavyweight 98–115 kg), addresses both passive and active dynamic dummies used for Z‑axis seat vibration testing, and gives guidance on validation testing and future research to compare dummy and participant measurements.

General information

• Status: Published.
• Publication date: 6 November 2024 (ISO publication).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.160 (Vibration and shock with respect to human beings); 43.020 (Road vehicles in general).
• Edition / version: Edition 1 (2024‑11).
• Number of pages: 22 (ISO PDF); some national/adopted publications (e.g. BSI identical national publication) list 32 pages in their formatted edition.

Scope

Defines the specification and minimum performance of dynamic test dummies used as replacements for human participants when measuring vertical (Z‑axis) vibration transmission through vehicle seats in laboratory conditions. The scope limits application to seats installed in earth‑moving machinery, agricultural wheeled tractors and industrial trucks, and covers only passive and active dummies for Z‑axis motion (vertical direction). The document also specifies validation procedures and acceptance criteria for the two defined mass groups.

Key topics and requirements

• Specification of dynamic dummy geometry and mass distribution for two mass groups (lightweight 52–55 kg; heavyweight 98–115 kg).
• Required biodynamic response characteristics (frequency‑domain/ time‑domain performance) that the dummy must reproduce to represent human occupants in Z‑axis tests.
• Technical and construction requirements for passive and active dummy components relevant to vertical motion.
• Acceptance criteria and a defined validation test method to demonstrate conformity of a dummy to the specification.
• Guidance on limitations, expected differences between dummy and participant measurements, and directions for future research (for example, leg influence and seat natural frequency effects).

Typical use and users

Used by vehicle and seat manufacturers, OEM test engineers, independent vibration and acoustics laboratories, certification bodies, and researchers studying whole‑body vibration and seat comfort. It is applied when developing, benchmarking or validating seat suspension and isolation systems where vertical dynamics and occupant biodynamics are significant.

Related standards

Part 3 is one element of the ISO 10326 series (Mechanical vibration — Laboratory method for evaluating vehicle seat vibration). Key related parts include ISO 10326‑1 (Part 1: Basic requirements — laboratory test methods and reporting) and ISO 10326‑2 (Part 2: Application to railway vehicles). Users typically apply Part 1 for general test setup and instrumentation and Part 2 when testing seats intended for railway applications.

Keywords

dynamic dummy, Z‑axis, vertical vibration, vehicle seat, laboratory seat test, biodynamic response, validation test, whole‑body vibration, ISO 10326, seat transmissibility, earth‑moving machinery, agricultural tractors, industrial trucks.

FAQ

Q: What is this standard?

A: ISO 10326‑3:2024 is an international standard that specifies dynamic test dummies and associated validation procedures for measuring vertical (Z‑axis) vibration performance of vehicle seats in the laboratory.

Q: What does it cover?

A: It covers the mechanical and biodynamic specification of passive and active dynamic dummies, acceptance criteria and a validation test method for two representative mass groups (52–55 kg and 98–115 kg), limited to Z‑axis motion and to seats fitted in earth‑moving machinery, agricultural wheeled tractors and industrial trucks.

Q: Who typically uses it?

A: Seat and vehicle OEM test teams, independent vibration testing laboratories, standards and conformity assessment organizations, and researchers in vehicle ergonomics and vibration comfort. These users employ the standard to develop, compare and validate seat designs and isolation systems under vertical vibration.

Q: Is it current or superseded?

A: ISO 10326‑3:2024 is current (published November 2024). It is the first edition of Part 3 in the ISO 10326 series.

Q: Is it part of a series?

A: Yes — it is Part 3 of the ISO 10326 series (Mechanical vibration — Laboratory method for evaluating vehicle seat vibration). Other parts include ISO 10326‑1 (basic requirements) and ISO 10326‑2 (application to railway vehicles).

Q: What are the key keywords?

A: Dynamic dummy, vertical (Z‑axis) vibration, biodynamic response, seat transmissibility, validation test, earth‑moving machinery, agricultural wheeled tractor, industrial truck, whole‑body vibration, ISO 10326.